Is *Pandemic* by Sonia Shah worth reading?

Yes. Praised as a *New York Times* Editor’s Choice and finalist for the Los Angeles Times Book Prize, *Pandemic* provides a gripping analysis of disease dynamics. Its interdisciplinary approach—spanning 19th-century cholera outbreaks to contemporary MRSA and Ebola crises—makes it a timely resource for understanding global health challenges.

What is the “Cholera Paradigm” discussed in *Pandemic*?

The Cholera Paradigm refers to the social and environmental conditions (e.g., locomotion, filth, crowds) that enable pathogens to transition from localized microbes to global threats. Shah uses this framework to explain how cholera spread via 19th-century trade routes and how similar factors drive modern outbreaks in wet markets and hospitals.

How does *Pandemic* explain the role of transportation in disease spread?

Shah highlights how trains and ships accelerated cholera’s global dispersal in the 1800s, mirroring how air travel facilitates modern outbreaks like SARS-CoV-2. The book warns that faster transportation networks allow pathogens to reach pandemic potential within days, outpacing traditional containment methods.

What historical mistakes does *Pandemic* identify in public health responses?

Shah critiques past failures like ignoring sanitation reforms during cholera outbreaks and underestimating zoonotic spillover risks. These missteps repeat today, exemplified by delayed responses to Ebola and COVID-19, underscoring systemic weaknesses in global health infrastructure.

What are key quotes from *Pandemic: Tracking Contagions*?

- “Germs are the ultimate human parasites”: Emphasizes pathogens’ adaptability to human behavior. - “Cholera is a disease of inequality”: Links outbreaks to poverty and inadequate infrastructure. - “Pandemics are not acts of God but of humanity”: Stresses human responsibility in creating outbreak conditions.

How does *Pandemic* connect deforestation to disease emergence?

Shah details how cholera emerged after rice farmers cleared mangrove forests in the Sundarbans, disrupting ecosystems and exposing humans to new pathogens. Similar patterns are seen in Ebola (linked to forest encroachment) and Lyme disease (spread via fragmented habitats).

大流行病

Q: What is *Pandemic: Tracking Contagions from Cholera to Coronaviruses and Beyond* about?

*Pandemic* explores the origins and spread of infectious diseases through the lens of cholera’s historical trajectory, linking it to modern pathogens like Ebola and coronaviruses. Sonia Shah combines epidemiology, history, and personal narratives to analyze how urbanization, deforestation, and global travel accelerate outbreaks. The book argues that human activities create ideal conditions for pandemics, offering urgent lessons for contemporary public health.

Q: Who should read *Pandemic: Tracking Contagions from Cholera to Coronaviruses and Beyond*?

This book is critical for public health professionals, history enthusiasts, and readers interested in pandemic preparedness. It appeals to those seeking a blend of scientific rigor and storytelling, with insights into how socio-environmental factors shape disease transmission. General audiences will gain perspective on COVID-19 and other modern outbreaks through cholera’s historical parallels.

追踪传染病：从霍乱到冠状病毒及未来

索尼娅·沙阿

4.07(4020 Reviews)

《大流行病》概述

索尼娅·沙阿（Sonia Shah）的《大流行》（Pandemic）在新冠疫情爆发前四年就离奇地预言了我们的现实。这位科学记者的传染病探索揭示了人畜共患疾病是如何从动物传染给人类的，其中 60% 的新病原体源于野生动物。下一个等待出现的病原体会是什么？

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第 1 章

When Microbes Go Global: The Invisible Path to Pandemic

In 2013, a passenger boarding a Spirit Airlines flight from Haiti to Florida suddenly collapsed, exhibiting the telltale symptoms of cholera-violent diarrhea, rapid dehydration, and impending death. As emergency crews rushed to disinfect the plane, other passengers waited nearby, potentially just hours away from infection themselves. This near-miss exemplifies our precarious relationship with pandemic-causing pathogens, which continue to emerge despite our technological advances. Cholera, having caused seven global pandemics since the 1800s, represents both our past failures and future challenges in containing infectious diseases. Sonia Shah's "Pandemic" has become eerily prescient since its 2016 publication. The book has gained renewed attention during COVID-19, with epidemiologists and global health experts citing it as essential reading for understanding how pathogens exploit human behaviors and systems. Bill Gates included it in his pandemic preparedness reading list, noting how accurately it predicted the conditions that would enable a global outbreak. Shah's exploration of the "pandemic pathway" reveals not just the biological factors behind disease spread but the social, political, and economic forces that transform local outbreaks into worldwide catastrophes.

第 2 章

The Zoonotic Leap: How Animal Microbes Become Human Killers

The journey of a pandemic pathogen begins with a jump-the moment when a microbe that has existed harmlessly in animals for millennia finds its way into a human host. This critical transition, called zoonosis, represents the first step on the pandemic pathway. Vibrio cholerae, the bacterium responsible for cholera, originated in tiny sea crustaceans called copepods in the Sundarbans wetlands at the Bay of Bengal's mouth. For centuries, this microbe lived in peaceful symbiosis with these creatures, recycling chitin from their discarded exoskeletons. When British colonists began clearing the Sundarbans forests in the 1760s, they inadvertently created unprecedented contact between humans and this vibrio-rich environment. The bacteria adapted, developing filaments that allowed them to form microcolonies capable of adhering to the human gut. But initial infections were limited to people directly exposed to copepod-rich waters-the pathogen remained "on a leash." The breakthrough came when V. cholerae acquired the ability to produce a toxin that reversed normal intestinal function, causing massive fluid loss that both eliminated competing gut bacteria and ensured transmission through contaminated excreta. This evolutionary leap transformed cholera from a localized threat into a pandemic-capable pathogen with a basic reproductive number (R0) of 2-6, meaning each infected person could spread it to multiple others. The first cholera pandemic erupted in 1817 in Jessore after heavy rainfall flooded the Sundarbans with brackish water. The disease, locally called "ola" ("the purge"), killed with unprecedented speed as victims expelled over fifteen quarts of milky-white stool daily, rapidly becoming withered corpses within hours. Similar zoonotic jumps continue today, accelerated by human encroachment into wild habitats. In Guinea's once-biodiverse forests, massive deforestation in the 1990s created unprecedented human-wildlife contact. While many species disappeared, resilient bats remained, squeezing into smaller forest patches near human settlements. These bats, which make ideal incubators for human-infecting microbes due to their massive colonies and unusual immune systems, eventually transmitted the Ebola virus to humans. What had been an occasional spillover in remote areas became, in 2013, an unprecedented epidemic that would kill over ten thousand people across West Africa. Economic development similarly enabled SARS to emerge in China. While wild animal consumption had long been practiced there, China's economic boom in the 1990s transformed this practice. A newly prosperous urban class demanded more exotic meats, spurring restaurants serving wild animals to proliferate. Reopened trade with Southeast Asian neighbors allowed poachers to venture deeper into forests, cramming increasingly diverse wild animals into ever-larger wet markets. This unprecedented scale created the conditions for a bat coronavirus to infect palm civets and eventually humans, causing the 2003 SARS outbreak. Even in wealthy countries, ecological disruption enables pathogen emergence. West Nile virus entered the United States repeatedly via migratory birds but didn't cause an outbreak until 1999, when declining avian biodiversity had removed natural barriers to its spread. Similarly, northeastern forest fragmentation caused specialist species like opossums (which destroy thousands of ticks weekly) to vanish, while generalist species like deer and white-footed mice flourished. This led to exploding tick populations and the emergence of Lyme disease, which now infects 300,000 Americans annually.

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第 3 章

Mobility Networks: How Local Outbreaks Go Global

For microscopic pathogens to cause pandemics, they must overcome their immobility and become ubiquitous across continents and oceans. This critical step toward pandemicity relies almost entirely on human transportation systems. The story of Chewy, a pet prairie dog who contracted monkeypox after exposure to infected African rodents at a pet distribution center, illustrates this dynamic. When placed in a hamster ball with oxygen to treat respiratory symptoms, Chewy became what microbiologist Mark Slifka called a "poxvirus bomb"-aerosolizing the virus and infecting ten people. Ultimately, infected prairie dogs spread monkeypox to seventy-two people across six U.S. states. Commercial air travel provides pathogens unprecedented mobility. Physicist Dirk Brockmann demonstrated that modern pandemics follow patterns based on air travel networks rather than geographic proximity. On a flight-time map, well-connected cities like New York are "closer" to London than to nearby Providence due to direct flight availability. The same flights that brought monkeypox-infected rodents from Ghana to America also transported Pseudogymnoascus destructans fungus from European bat caves to America, causing white-nose syndrome that killed millions of bats. Cholera could never have caused global pandemics without the transportation revolution of the nineteenth century. Despite living in ocean waters, Vibrio cholerae is nearly stationary on its own. With cholera's short tenure in the human body (about a week), it required new forms of rapid transit to spread globally. Europeans initially believed "Asiatic cholera" would never reach their enlightened societies, but by 1832 it had reached Paris, causing horrifying symptoms that transformed victims within hours-shriveled faces, tarry blood, violent muscle spasms, and massive fluid loss-all while victims remained conscious. The Atlantic Ocean, once a formidable barrier to cholera's spread, became a thoroughfare with the introduction of scheduled packet ships in 1817-the same year cholera emerged in the Sundarbans. Ships became perfect vectors through multiple mechanisms: ballast materials transported thousands of species worldwide, with wooden vessels using dry ballast full of marine life and iron ships using water ballast that carried cholera even more efficiently. Meanwhile, America's interior remained largely impenetrable until the Erie Canal opened in 1825, connecting the Hudson River to Lake Erie and wedding Atlantic saltwater with the freshwater network of the interior. This engineering marvel slashed transportation costs by 95% but also allowed waterborne pathogens to wash into every corner of American society. Today, one billion people fly annually through tens of thousands of airports worldwide, with Asia now the hub of global transportation. Modern medical tourism exemplifies how pathogens travel globally-India's gleaming facilities attract international patients seeking affordable surgeries, with 15% arriving from overseas. Despite impressive facilities, these medical tourists expose themselves to India's unique microbial environment, including the particularly dangerous New Delhi metallo-beta-lactamase 1 (NDM-1) plasmid, which makes bacteria resistant to fourteen antibiotic classes and has spread to 29 countries via returning patients.

第 4 章

The Filth Factor: How Waste Management Shapes Disease Transmission

For pathogens, human excreta provides an ideal transmission vehicle, with each gram containing up to one billion viral particles. Ancient civilizations understood the importance of separating people from their waste-Romans used elaborate water systems delivering 300 gallons daily per resident to flush waste away from settlements. Despite this historical knowledge, by the nineteenth century, New Yorkers were consuming approximately two teaspoons of fecal matter daily. The rise of Christianity in the fourth century marked a significant shift away from ritualized hygiene practices common in other religions. Unlike Hindus, Muslims, and Jews who prescribed specific washing rituals, Christianity required minimal water-based cleansing. Prominent Christians even viewed cleanliness with suspicion, considering "a clean body and dress" to mean "an unclean soul." When bubonic plague struck Europe in the mid-fourteenth century, physicians wrongly blamed bathing, claiming it opened pores to "pestiferous vapour." This led to the closure of remaining Roman bathhouses and a profound European aversion to water that lasted centuries. Medieval Europeans developed "dry" hygiene practices, using perfumes, fancy fabrics, and specialized tools rather than water for cleanliness. They lived intimately with human and animal waste, sharing homes with livestock and using simple buckets, outhouses, or hand-dug pits with minimal regulation. Dutch and English colonists brought these medieval waste management practices to Manhattan, emptying privies into streets for hogs to consume. By 1820, privies covered one-twelfth of New York City while thousands of animals defecated freely in streets. Raw sewage rotted in tenements, creating a thick greenish fluid under wooden boards laid to hide the filth. Manhattan's geography made it particularly vulnerable to water contamination. Unlike rural areas where medieval waste practices originated, the island had thin soil atop fractured bedrock, allowing waste to travel hundreds of yards underground. With the Hudson and East Rivers too salty to drink and rainwater contaminated by soot, New Yorkers relied on shallow wells for drinking water. One well in the notorious Five Points slum provided 700,000 gallons daily to one-third of the city's residents. New Yorkers knew their water was tainted-scientists found it contained 8,000 milligrams of debris per gallon compared to 130 in fresh upstate water. They rarely drank it straight, preferring to make it into beer or add gin, which fortuitously killed cholera vibrio. When cholera first struck New York in June 1832, it spread through encounters with contaminated rivers. A tailor named Fitzgerald crossed the East River by ferry and infected his family; a drunk man fell into the Hudson; cases erupted along waterfront properties. The vibrio quickly contaminated the city's drinking water, with each glass potentially holding 200 million invisible cholera vibrios. Vendors who diluted milk with water and bartenders who watered down drinks unwittingly spread the disease. By mid-July, the city had fallen silent except for corpse carts and smoke from burning contaminated bedding, with over a hundred deaths daily. While Western attitudes toward human waste have evolved since the nineteenth century, our approach to animal excreta remains dangerously casual. Industrial livestock farming generates thirteen times more solid waste than humans in the United States, overwhelming the absorptive capacity of croplands. Farmers store this waste in massive "manure lagoons" that leach into groundwater, overflow during storms, and create pollution plumes affecting neighboring communities. This widespread fecal contamination enables pathogens like Shiga toxin-producing E. coli (STEC) to spread, causing 70,000 infections annually in America alone.

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第 5 章

Crowded Conditions: The Human Petri Dish

Crowding, more than filth itself, creates the conditions for pandemic spread. Between 1800 and 1850, urban populations exploded-doubling in France and Germany, tripling in London, and growing by 500% in the United States. Many were drawn by manufacturing jobs, but unexpected events also drove mass migration. The Irish Potato Famine, triggered when Phythophthora infestans arrived in Ireland in 1845 via steamship, devastated the potato-dependent population. With their primary food source destroyed, 1.5 million Irish died and another 1.5 million fled, with nearly 850,000 landing in New York between 1847-1851. Many Irish refugees settled in Five Points, built atop the garbage-filled Collect Pond. To accommodate them, property owners frantically expanded housing-adding floors to existing buildings, constructing houses in backyards, and converting stables into apartments. Eventually they built tenements: four- and six-story brick buildings designed to maximize occupancy. "Rear tenements" were constructed in back lots, with windows facing only dim, privy-filled alleys. In one Cedar Street tenement, five families shared two beds in a 144-square-foot room. The most wretched dwellings were underground basements and cellar flophouses where canvas bunks rented for pennies weekly. Five Points concentrated the poor in one central location rather than dispersing them along city edges, creating what anthropologist Wendy Orent calls a "disease factory" in Manhattan's heart. After seventeen years, cholera returned to New York in 1849 with devastating force. The epidemic began quietly when a ship arrived with cholera-infected passengers. Despite quarantine efforts at a makeshift hospital, 150 escapees infiltrated the city. In rooms without running water where multiple families lived together, the vibrio easily spread person-to-person through contaminated bedding, clothes, and hands. Once the bacteria entered groundwater, the epidemic exploded across the city, as two-thirds still relied on shallow public wells. Over five thousand died in this devastating outbreak. By mid-nineteenth century, American cities had become "virtual charnel houses" with deaths outnumbering births. Urban children under five died at nearly twice the rate of rural children. A ten-year-old in a small New England town could expect to reach fifty; in New York City, they'd die before thirty-six. Population density directly correlated with childhood mortality. Industrial cities survived only because immigrants constantly replenished their dying populations-nearly 23,000 monthly in post-epidemic New York. Today's housing revolution has made cities healthier than rural areas in developed nations. However, this revolution remains partial and selective. In countries like India, housing regulations are as sparse as in nineteenth-century New York. Mumbai's Dharavi slum holds 1.4 million people per square mile-seven times denser than Five Points. Urbanization is accelerating: by 2030, most humans will live in cities, with two billion in slums. Our livestock population lives in animal equivalents of slums, with over half of pigs and chickens raised on factory farms. Crowded conditions enable pathogens to become more deadly by lifting evolutionary constraints on virulence. Typically, high virulence disadvantages pathogens that spread through social contact-sick or dead victims can't effectively transmit disease. But when sickbeds occupy living rooms, hospital wards overflow with multiple patients, or sick animals share cages with healthy ones, pathogens can evolve greater virulence without sacrificing transmission.

第 6 章

The Political Dimension: How Corruption Undermines Containment

While pathogens that can spill over, spread, and cause disease are dangerous, their pandemic potential is equally determined by how societies respond. Human cooperation represents a formidable defense against pathogens-our species cooperates more frequently, intensively, and on larger scales than any other mammal. Even societies with rudimentary understanding of disease transmission can implement effective containment strategies through cooperation. Pandemics unfold not just because aggressive pathogens exploit victims, but because our capacity for cooperative action fails when individuals prioritize private interests over public ones. This corruption of public health occurred dramatically in nineteenth-century New York during the cholera epidemics. In 1797, Dr. Joseph Browne and engineer William Weston proposed a public waterworks to provide clean Bronx River water to New Yorkers-an affordable, technically feasible solution that would have protected residents from waterborne diseases. Despite physician endorsement of fresh water as "one of the most powerful" means of preventing disease, private interests derailed this public health initiative. Aaron Burr exploited New York's water crisis for political gain, creating the Manhattan Company as a private water company that would secretly function as a Republican-friendly bank. After derailing the public waterworks proposal through misinformation and political maneuvering, Burr secured a charter allowing the company to raise $2 million with permission to use excess funds for banking activities. The Manhattan Company immediately downgraded its water plans, using horses instead of steam engines, wooden pipes instead of iron, and a tiny reservoir. Worst of all, rather than tapping the clean Bronx River, it drew water from the contaminated Collect Pond despite acknowledging privately that the water was "disgusting" and unfit for consumption. While spending only $172,261 on waterworks, it devoted the rest to banking, providing substantial loans to Republican elites including Burr himself. The company distributed contaminated water through both cholera epidemics and eventually evolved into today's JPMorgan Chase. Despite quarantine's proven effectiveness against diseases like bubonic plague and yellow fever, political leaders corrupted by ideological and commercial concerns undermined this vital containment measure against cholera. As international commerce grew in the nineteenth century, quarantines were increasingly viewed as disruptive to trade. New York City's quarantine enforcement had weakened by 1832, with implementation left to easily bribed local health officers and enforcement full of loopholes. The third failed containment measure was prompt public notification about disease outbreaks. New York City's mayor and health board refused to alert citizens about cholera's arrival in 1832, fearing trade disruption. Despite physicians' pleas, officials denied cholera's presence even as cases mounted. Evidence suggests authorities may have destroyed quarantine records from the critical months preceding the outbreak. These officials faced an unbalanced choice between certain economic costs and uncertain public health benefits, typically choosing private interests over public welfare. Similar cover-ups continue in modern times: China treated the 2002 SARS outbreak as a state secret until exposed by a chance online message; Cuba suppressed news of cholera in 2012, arresting journalists and forcing doctors to falsify death certificates; Saudi Arabia punished the virologist who alerted the world to MERS; and India's government attacked researchers who reported on the NDM-1 superbug, claiming their work was "a conspiracy to hurt Indian medical tourism."

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第 7 章

The Social Fracture: Blame, Fear, and Pandemic Response

Unlike disasters such as terrorist attacks or hurricanes that tend to bring communities together, pandemic-causing pathogens often breed suspicion and mistrust, destroying social bonds as effectively as they destroy bodies. This dynamic was evident in Haiti, where the cholera epidemic inflamed violent clashes between locals and UN peacekeeping troops who had introduced the disease into the country. Epidemics of new disease often trigger not solidarity but social collapse, spawning what critic Susan Sontag called "an inexorable collapse of morals and manners." The discord isn't random but focuses intensely on specific scapegoats. Psychological studies reveal that scapegoating intensifies when people feel powerless over a crisis or complicit in it themselves. Groups perceived as powerful yet mysterious become ideal targets. Novel pathogens create perfect conditions for this dynamic by disrupting people's sense of control while striking some but not others, suggesting some form of complicity. Scapegoating during epidemics has ancient roots, continuing through history with devastating consequences. In the 1890s, Eastern European immigrants became targets during cholera outbreaks in New York, with the Mayor demanding immigration be halted and the New York Times calling Russian Jews and Hungarians "offensive" and "a positive menace to health." When the ship Normannia arrived with cholera cases in 1893, armed mobs threatened passengers and the National Guard had to intervene. While 19th century scapegoating may not have increased cholera's death toll (given the ineffective treatments of the time), modern attacks on health workers directly increase mortality. During the 2014 Ebola epidemic, healthcare workers were assaulted and even murdered, with locals viewing them as "transporters of the virus." This mistrust stemmed not from superstition but from decades of human rights violations that eroded public trust. Vaccination campaigns worldwide have triggered similar violent rejection, undermining pathogen containment. From Nigeria to Los Angeles, people reject vaccines, accusing administrators of misdeeds from undermining Islam to poisoning babies. The WHO's 1998 polio eradication campaign faced widespread resistance-Nigerian Muslim leaders claimed the vaccine contained HIV and sterilized Muslims; Taliban leaders in Pakistan alleged espionage; and Indian communities suspected contamination with pig's blood and contraceptives. These suspicions erupted into violence, with militants killing sixty-five vaccine workers in Pakistan by 2014. In America and Europe, vaccine skepticism has allowed once-controlled pathogens to resurge. Despite vaccines' proven role in reducing diseases, resistance mounted when governments mandated childhood vaccinations in the 1980s. Popular claims that MMR vaccines cause autism persist despite being thoroughly debunked. As refusals spread, nineteen states allowed "philosophical" exemptions, with fourteen making exemption easier than vaccination. By 2011, over 5% of kindergarteners in eight states were unvaccinated, undermining herd immunity. Measles, declared eliminated in 2000, saw multiple outbreaks by 2011, including one at Disneyland infecting 140 people across seven states.

第 8 章

Scientific Paradigms and Pandemic Solutions

Finding out how cholera spread was urgent for all affected sectors, especially the medical community. Despite intense work and numerous theories, effective cures eluded doctors for decades-not due to lack of technical capacity or observations, but because the right observations contradicted prevailing paradigms. Thomas Kuhn explained in 1962 how scientific paradigms-theoretical constructs that explain phenomena-can paradoxically repress discovery. Paradigms provide essential frameworks but create cognitive dilemmas: confirmation bias (seeing only what supports expectations) and change blindness (failing to notice contradictory evidence). Hippocratic theory was nineteenth-century medicine's paradigm, viewing health as a balance of external and internal factors. Without such paradigms, science couldn't function-they help determine which questions to ask. But they also limit perception, causing scientists to reject observations that violate expectations. John Snow, a London anesthetist, collected compelling evidence that cholera spread through contaminated water, not miasmas. Despite his masterful evidence showing dramatically lower death rates among those drinking clean water, the medical establishment couldn't abandon miasmatic theory. The committee acknowledged cholera could spread in water but insisted air played the "decisive role." When Snow testified against a bill targeting industries emitting miasmas, Parliament grew hostile. The Lancet accused him of betraying public health, and Snow's findings had minimal impact. Nineteenth-century cholera treatments, based on Hippocratic principles, actually increased death rates from 50% to 70%. Doctors administered toxic mercury compounds like calomel to induce vomiting and diarrhea-the very symptoms killing patients. They practiced bloodletting, believing it would restore the body's "humors" and fix patients' dark, thick blood (actually a sign of dehydration). Most disastrously, they promoted dumping human waste into drinking water supplies, inadvertently helping Vibrio cholerae spread. In 1858, the year Snow died, Parliament decided to resewer London due to the "Great Stink." With the stench overwhelming Parliament's chambers, legislators fled their meeting rooms while holding handkerchiefs over their noses. Fearing plague, parliamentarians adopted engineer Joseph Bazalgette's plan to build intercepting sewers that would divert London's waste downstream. By 1875, the new sewers were completed, Bazalgette was knighted, the Thames was sewage-free, and cholera vanished from London-all while the medical establishment continued to reject the idea that contaminated water transmitted cholera. The new paradigm of "germ theory" emerged in the late nineteenth century, positing that microbes, not miasmas, cause contagions. Microscopy came back into fashion, allowing scientists to revisit the microbial world first observed by Leeuwenhoek centuries earlier. In 1884, German microbiologist Robert Koch announced his discovery of Vibrio cholerae as the cholera-causing microbe (though Italian doctor Filippo Pacini had identified a "choleraic microbe" in 1854). The 1897 cholera outbreak in Hamburg finally settled the debate when Hamburg's western suburb of Altona remained disease-free because it filtered its drinking water while Hamburg didn't.

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第 9 章

Climate Change and the Future of Pandemics

Fossil fuels have enabled pandemic conditions by providing energy surpluses that accelerated human expansion, urbanization, and mobility. But beyond these factors, fossil fuel consumption's climate impact may prove even more consequential for disease emergence. By releasing ancient carbon 100,000 times faster than it formed, we've increased atmospheric CO2 by over 40% since pre-industrial times, warming oceans and raising sea levels. For most of the twentieth century, scientists believed cholera lived exclusively on land, transmitted through contaminated water. Two discoveries changed this understanding: Rita Colwell found Vibrio cholerae in Chesapeake Bay in 1976, eventually identifying over 200 serogroups across five continents' waters; and Alister Hardy's Continuous Plankton Recorder revealed that plankton populations respond dramatically to environmental changes, shifting northward at fourteen miles yearly as oceans warm. While initially dismissed as "paracholera," El Tor vibrio proved catastrophic when environmental conditions changed. In 1961, it broke out of Sulawesi amid increasing rainfall and rising seas, striking Indonesia, the Philippines, Malaysia, Thailand, and China where it killed up to 50,000 people. By 1971, it reached Africa, causing deadly outbreaks around the shrinking Lake Chad. The WHO finally admitted this wasn't a mild local peculiarity but true cholera-the seventh pandemic had begun. In 1990, cholera returned to South America after a 95-year absence, coinciding with an El Nino event that warmed coastal waters near Peru. The warm waters transformed local plankton communities, reversed currents, and created ideal conditions for cholera vibrios to become more abundant and virulent. Within months, 72,000 Peruvians fell ill as the disease spread across the continent via rivers. By 1993, nearly a million people had sickened across Latin America with 9,000 dead. Climate change influences infectious diseases in complex ways. Heavy rainfall preceded 68% of U.S. waterborne disease outbreaks between 1948-1994, while West Nile virus cases rise 33% after heavy precipitation. Warming temperatures expand ranges for disease vectors like bats, mosquitoes, and ticks-the Asian tiger mosquito has spread northward in Italy, while Aedes aegypti reached California in 2013. Warmer weather also accelerates pathogen life cycles; malaria parasites develop faster at higher temperatures, increasing transmission likelihood. We live in a world saturated with fungi, potent pathogens that can persist independently after hosts die. While fungi devastate plants and animals like bats and amphibians, humans rarely suffer serious fungal infections thanks to our warm-bloodedness-our 98F internal temperature exceeds Earth's ambient 61F by 35 degrees, making our bodies too hot for most fungi to survive. Climate change threatens this protection by gradually training fungi to tolerate higher temperatures. Heat-tolerant fungi would pose an unprecedented infectious threat, as we lack other defenses against them. Already, fungal diseases like Valley Fever have increased sevenfold in California and Arizona.

第 10 章

Tracking and Preventing the Next Pandemic

I often encounter nervous reactions when presenting about pandemics, with audience members expressing fear and questioning whether panic is productive. The 2014 Ebola epidemic perfectly illustrates this phenomenon-while West Africans suffered, Americans panicked despite minimal actual risk. Nearly two-thirds of Americans feared an Ebola epidemic would reach them, schools quarantined teachers who'd visited African countries thousands of miles from the outbreak, and hazmat teams responded to routine illnesses in travelers. Paradoxically, the same societies that panicked about Ebola remain remarkably indifferent to endemic threats like Lyme disease, which affects 300,000 Americans annually with serious consequences. Despite Lyme disease's serious impact, even in heavily affected areas like Connecticut, people show remarkable indifference. Students who personally witnessed Lyme's effects take no precautions against tick bites, local shops don't stock protective clothing, and hiking trails lack warning signs. Our perception of pathogens is shaped by war metaphors-we "attack" illness and "wage war" on disease. This framing creates expectations that pathogens should be easily conquered foes. Consequently, diseases that seem invulnerable to our medical arsenal, like Ebola with its lack of vaccines or treatments, trigger disproportionate fear even when they pose little actual threat. Conversely, pathogens theoretically vulnerable to our interventions inspire complacency despite causing greater harm. Fixing surveillance requires both accessible healthcare everywhere and expanded monitoring approaches. Rather than waiting for sick people to visit doctors, active surveillance can search for pandemic signs in hotspots where new pathogens are most likely to emerge-places where wild habitats are being invaded, slums are expanding, factory farms are growing, and air connections are increasing. Scientists from Hong Kong already collect monthly samples from markets and slaughterhouses, while USAID's Emerging Pandemic Threats program coordinates surveillance in global hotspots like the Congo basin and Mekong region. For enthusiasts like emerging-disease expert Peter Daszak, enhanced surveillance would allow modern activities that increase pandemic risk to continue without consequences. "You can have your cake and eat it too," he suggests-we can keep eating meat, flying in airplanes, and consuming global food while understanding and insuring against the risks. A modest tax on air travel (just 1%) could fund a global surveillance system, while a pandemic insurance fund could finance rapid responses to early warnings. The remote fishing village of Belle-Anse, Haiti illustrates surveillance's limitations. Despite being 50 miles from Port-au-Prince, it's brutally isolated-requiring an eight-hour journey via overcrowded minivan, motorcycle, and boat. When cholera struck Haiti in 2010, digital surveillance tracked its predictable spread to Belle-Anse with remarkable precision. NGOs mapped the entire country "down to each stray dog," while Swedish researchers tracked population movements via mobile phone SIM cards to predict outbreak patterns. This early detection system worked perfectly, yet made no difference in disease outcomes. When cholera reached Belle-Anse in 2011, it killed at a rate four times higher than elsewhere in Haiti. The village was connected enough to receive the disease but not connected enough to receive adequate help or allow residents to escape. The power of pathogens to transform society looms over all of us, though only some have felt it directly. Even as the next pandemic gains momentum, the identity of the pathogen that will cause it remains obscure-it could be a jungle pathogen like Ebola, a marine creature like cholera, or something entirely different. On a summer evening boat trip to the Chesapeake Bay, I was acutely aware of the vibrio bacteria, including cholera, present in the warm brackish waters. Yet despite this knowledge, the inviting water offered relief from the heat, and I slipped into its fluid embrace, watching the cholera-rich waters whirl around me.

★★★★★

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《大流行病》核心主题

zoonotic spillover
pathogen evolution
ecological disruption
global mobility networks
human-wildlife conflict

《大流行病》经典语录

Cholera represents both our past failures and future challenges.
Pathogens exploit human behaviors and systems.
Initial infections were limited—the pathogen remained 'on a leash.'
Modern pandemics follow patterns based on air travel networks.
Ships became perfect vectors.

《大流行病》主要人物

Sonia ShahAuthor and investigative journalist
Mark SlifkaMicrobiologist who studied monkeypox transmission
Dirk BrockmannPhysicist studying air travel network patterns

关于作者

索尼娅·沙阿（Sonia Shah）是备受赞誉的科学记者，也是《大流行：追踪从霍乱到冠状病毒及以后的传染病》（Pandemic: Tracking Contagions from Cholera to Coronaviruses and Beyond）一书的作者。她是古根海姆学者，也是全球健康危机领域的权威。她于1969年出生于纽约市的一个印度移民家庭，她的作品结合了严谨的调查与历史分析，素材取自她在印度、南非、澳大利亚等地的实地报道。

作为国家学院（The Nation Institute）的前研究员，沙阿在流行病学和人权方面的专业见解曾刊登于《纽约时报》、《科学美国人》，她关于疟疾的TED演讲播放量已超过100万次。

她2017年的著作《大流行》——曾入选《纽约时报》编辑选书，并入围《洛杉矶时报》图书奖决赛——探讨了病原体如何塑造社会，这得益于她数十年来对不平等和企业权力的关注。沙阿的其他作品包括探讨气候驱动型迁徙的《下一次大迁徙》（The Next Great Migration，2020年），以及关于疟疾历史的里程碑式著作《热病》（The Fever，2010年）。

她经常在哈佛大学和麻省理工学院等机构发表演讲，并凭借即将出版的新书《特殊：一个野蛮思想的兴衰》（Special: The Rise and Fall of a Beastly Idea）获得惠廷基金会奖金。《大流行》已被翻译成六种语言，至今仍是全球公共卫生课程的必读书目。

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由哥伦比亚大学校友在旧金山创建

LOVED BY

1,000,000+ curious minds.

4.7

avg rating

1M+ learners

"Instead of endless scrolling, I just hit play on BeFreed. It saves me so much time."

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"I never knew where to start with nonfiction—BeFreed’s book lists turned into podcasts gave me a clear path."

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117

"Perfect balance between learning and entertainment. Finished ‘Thinking, Fast and Slow’ on my commute this week."

@Raaaaaachelw

"Crazy how much I learned while walking the dog. BeFreed = small habits → big gains."

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"Reading used to feel like a chore. Now it’s just part of my lifestyle."

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"Feels effortless compared to reading. I’ve finished 6 books this month already."

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"BeFreed turned my guilty doomscrolling into something that feels productive and inspiring."

@Pitiful

4.5K

"BeFreed turned my commute into learning time. 20-min podcasts are perfect for finishing books I never had time for."

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@Jaded_Falcon

201

"It is great for me to learn something from the book without reading it."

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"The themed book list podcasts help me connect ideas across authors—like a guided audio journey."

@Leo, Law Student, UPenn

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"Makes me feel smarter every time before going to work"

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"Perfect balance between learning and entertainment. Finished ‘Thinking, Fast and Slow’ on my commute this week."

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@SofiaP

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483

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"Instead of endless scrolling, I just hit play on BeFreed. It saves me so much time."

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"I never knew where to start with nonfiction—BeFreed’s book lists turned into podcasts gave me a clear path."

@Chloe, Solo founder, LA

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@Raaaaaachelw

"Crazy how much I learned while walking the dog. BeFreed = small habits → big gains."

@Matt, YC alum

108

"Reading used to feel like a chore. Now it’s just part of my lifestyle."

@Erin, Investment Banking Associate , NYC

254

"Feels effortless compared to reading. I’ve finished 6 books this month already."

@djmikemoore

"BeFreed turned my guilty doomscrolling into something that feels productive and inspiring."

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"BeFreed turned my commute into learning time. 20-min podcasts are perfect for finishing books I never had time for."

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"It is great for me to learn something from the book without reading it."

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大流行病

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1,000,000+ curious minds.

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一本书，多种聆听方式。

When Microbes Go Global: The Invisible Path to Pandemic

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边听边看，每个词都清晰呈现

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从 《大流行病》中收获更多

Crowded Conditions: The Human Petri Dish

The Political Dimension: How Corruption Undermines Containment

边听边看，每个词都清晰呈现

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从 《大流行病》中收获更多

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你已读完 《大流行病》

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