BEIJING — When China suddenly scrapped onerous zero-COVID measures in December, the country wasn’t ready for a massive onslaught of cases, with hospitals turning away ambulances and crematoriums burning bodies around the clock.
Chinese state media claimed the decision to open up was based on “scientific analysis and shrewd calculation,” and “by no means impulsive.” But in reality, China’s ruling Communist Party ignored repeated efforts by top medical experts to kickstart exit plans until it was too late, The Associated Press found.

Andy Wong, Associated Press
An elderly patient receives an intravenous drip while using a ventilator in the hallway of the emergency ward Jan. 5 in Beijing.
Instead, the reopening came suddenly at the onset of winter, when the virus spreads most easily. Many older people weren’t vaccinated, pharmacies lacked antivirals, and hospitals didn’t have adequate supplies or staff — leading to as many as hundreds of thousands of deaths that may have been avoided, according to academic modeling, more than 20 interviews with current and former China Center for Disease Control and Prevention employees, experts and government advisers, and internal reports and directives obtained by the AP.
“If they had a real plan to exit earlier, so many things could have been avoided,” said Zhang Zuo-Feng, an epidemiologist at the University of California, Los Angeles. “Many deaths could have been prevented.”
Experts estimate that many hundreds of thousands of people, perhaps millions, may have died in China’s wave of COVID-19 — far higher than the official toll of under 90,000, but still a much lower death rate than in Western countries. However, 200,000 to 300,000 deaths could have been prevented if the country was better vaccinated and stocked with antivirals, according to modeling by the University of Hong Kong. Some scientists estimate even more lives could have been saved.
“It wasn’t a sound public health decision at all,” said a China CDC official, declining to be named to speak candidly on a sensitive matter. “It’s absolutely bad timing … this was not a prepared opening.”

Associated Press
Chinese policemen pin down a protester during a protest against anti-virus measures Nov. 27, 2022, on a street in Shanghai.
For two years, China stood out for its tough but successful controls against the virus, credited with saving millions of lives as other countries struggled with stop-and-start lockdowns. But with the emergence of the highly infectious omicron variant in late 2021, many of China’s top medical experts and officials worried zero-COVID was unsustainable.
In late 2021, China’s leaders began discussing how to lift restrictions. As early as March 2022, top medical experts submitted a detailed reopening strategy to the State Council, China’s cabinet. The existence of the document is being reported for the first time by the AP.
But discussions were silenced after an outbreak the same month in Shanghai, which prompted Chinese leader Xi Jinping to lock the city down. Chinese public health experts stopped speaking publicly about preparing for an exit, as they were wary of openly challenging a policy supported by Xi.
By the time the Shanghai outbreak was under control, China was months away from the 20th Party Congress, the country’s most important political meeting in a decade, making reopening politically difficult. So the country stuck to mass testing and quarantining millions of people.
“Everybody waits for the party congress,” said one medical expert, declining to be named to comment on a sensitive topic. “There’s inevitably a degree of everyone being very cautious.”
At the Congress in mid-October, top officials differing with Xi were sidelined. Instead, six loyalists followed Xi onstage in a new leadership lineup, signaling his total domination of the party.
With the congress over, some voices in the public health sector finally piped up. In an internal document published Oct. 28, obtained by The Associated Press and reported here for the first time, Wu Zunyou, China’s CDC chief epidemiologist, criticized the Beijing city government for excessive COVID-19 controls, saying it had “no scientific basis.” He called it a “distortion” of the central government’s zero-COVID policy, which risked “intensifying public sentiment and causing social dissatisfaction.”

Ng Han Guan, Associated Press
Medical workers in protective gear prepare equipment outside a fever clinic at a hospital Dec. 9, 2022, in Beijing.
At the same time, he called the virus policies of the central government “absolutely correct.” One former CDC official said Wu felt helpless because he was ordered to advocate for zero-COVID in public, even as he disagreed at times with its excesses in private.
Wu did not respond to an email requesting comment. A person acquainted with Wu confirmed he wrote the internal report.
In early November, then-Vice Premier Sun Chunlan, China’s top “COVID czar,” summoned experts from sectors including health, travel and the economy to discuss adjusting Beijing’s virus policies, according to three people with direct knowledge of the meetings. On Nov. 10, Xi ordered adjustments.
The next day, Beijing announced 20 new measures tweaking restrictions, such as reclassifying risk zones and reducing quarantine times. But at the same time, Xi made clear, China was sticking to zero-COVID.
The government wanted order. Instead, the measures caused chaos.
In late November, public frustration boiled over. A deadly apartment fire in China’s far west Xinjiang region sparked nationwide protests over locked doors and other virus control measures. Some called on Xi to resign, the most direct challenge to the Communist Party’s power since pro-democracy protests in 1989.
Riot police moved in and the protests were swiftly quelled. But behind the scenes, the mood was shifting.
References to zero-COVID vanished from government statements. State newswire Xinhua said the pandemic was causing “fatigue, anxiety and tension,” and that the cost of controlling it was increasing day by day.
Days after the protests, Sun held meetings where she told medical experts the state planned to “walk briskly” out of zero-COVID. The final decision was made suddenly, and with little direct input from public health experts, several told the AP.
“None of us expected the 180-degree turn,” a government adviser said.
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Ignoring experts, China’s sudden zero-COVID exit cost lives
Ng Han Guan
FILE - Medical workers in protective gear prepare equipment outside a fever clinic at a hospital in Beijing, Dec. 9, 2022. China's sudden reopening after two years holding to a "zero-COVID" strategy left older people vulnerable and hospitals and pharmacies unprepared during the season when the virus spreads most easily, leading to many avoidable deaths, The Associated Press has found. (AP Photo/Ng Han Guan, File)
Ng Han Guan
FILE - Medical workers in protective gear prepare equipment outside a fever clinic at a hospital in Beijing, Dec. 9, 2022. China's sudden reopening after two years holding to a "zero-COVID" strategy left older people vulnerable and hospitals and pharmacies unprepared during the season when the virus spreads most easily, leading to many avoidable deaths, The Associated Press has found. (AP Photo/Ng Han Guan, File)
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Ignoring experts, China’s sudden zero-COVID exit cost lives
Ng Han Guan
FILE - Chinese policemen form a line to stop protesters marching against anti-virus measures in Beijing, Nov. 27, 2022. China's sudden reopening after two years holding to a "zero-COVID" strategy left older people vulnerable and hospitals and pharmacies unprepared during the season when the virus spreads most easily, leading to many avoidable deaths, The Associated Press has found. (AP Photo/Ng Han Guan, File)
Ng Han Guan
FILE - Chinese policemen form a line to stop protesters marching against anti-virus measures in Beijing, Nov. 27, 2022. China's sudden reopening after two years holding to a "zero-COVID" strategy left older people vulnerable and hospitals and pharmacies unprepared during the season when the virus spreads most easily, leading to many avoidable deaths, The Associated Press has found. (AP Photo/Ng Han Guan, File)
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Ignoring experts, China’s sudden zero-COVID exit cost lives
Ng Han Guan
FILE - Protesters hold up blank papers and chant slogans as they march in protest strict anti-virus measures in Beijing, Nov. 27, 2022. China's sudden reopening after two years holding to a "zero-COVID" strategy left older people vulnerable and hospitals and pharmacies unprepared during the season when the virus spreads most easily, leading to many avoidable deaths, The Associated Press has found. (AP Photo/Ng Han Guan, File)
Ng Han Guan
FILE - Protesters hold up blank papers and chant slogans as they march in protest strict anti-virus measures in Beijing, Nov. 27, 2022. China's sudden reopening after two years holding to a "zero-COVID" strategy left older people vulnerable and hospitals and pharmacies unprepared during the season when the virus spreads most easily, leading to many avoidable deaths, The Associated Press has found. (AP Photo/Ng Han Guan, File)
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Ignoring experts, China’s sudden zero-COVID exit cost lives
Andy Wong
FILE - A worker in protective gear collects a sample from a resident at a coronavirus testing site in Beijing, Nov. 29, 2022. China's sudden reopening after two years holding to a "zero-COVID" strategy left older people vulnerable and hospitals and pharmacies unprepared during the season when the virus spreads most easily, leading to many avoidable deaths, The Associated Press has found. (AP Photo/Andy Wong, File)
Andy Wong
FILE - A worker in protective gear collects a sample from a resident at a coronavirus testing site in Beijing, Nov. 29, 2022. China's sudden reopening after two years holding to a "zero-COVID" strategy left older people vulnerable and hospitals and pharmacies unprepared during the season when the virus spreads most easily, leading to many avoidable deaths, The Associated Press has found. (AP Photo/Andy Wong, File)
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Ignoring experts, China’s sudden zero-COVID exit cost lives
UGC
FILE - Chinese policemen pin down and detain a protester during a protest against anti-virus measures on a street in Shanghai, China on Nov. 27, 2022. China's sudden reopening after two years holding to a "zero-COVID" strategy left older people vulnerable and hospitals and pharmacies unprepared during the season when the virus spreads most easily, leading to many avoidable deaths, The Associated Press has found. (AP Photo, File)
UGC
FILE - Chinese policemen pin down and detain a protester during a protest against anti-virus measures on a street in Shanghai, China on Nov. 27, 2022. China's sudden reopening after two years holding to a "zero-COVID" strategy left older people vulnerable and hospitals and pharmacies unprepared during the season when the virus spreads most easily, leading to many avoidable deaths, The Associated Press has found. (AP Photo, File)
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Ignoring experts, China’s sudden zero-COVID exit cost lives
Andy Wong
FILE - An elderly patient receives an intravenous drip while using a ventilator in the hallway of the emergency ward in Beijing, Jan. 5, 2023. China's sudden reopening after two years holding to a "zero-COVID" strategy left older people vulnerable and hospitals and pharmacies unprepared during the season when the virus spreads most easily, leading to many avoidable deaths, The Associated Press has found. (AP Photo/Andy Wong, File)
Andy Wong
FILE - An elderly patient receives an intravenous drip while using a ventilator in the hallway of the emergency ward in Beijing, Jan. 5, 2023. China's sudden reopening after two years holding to a "zero-COVID" strategy left older people vulnerable and hospitals and pharmacies unprepared during the season when the virus spreads most easily, leading to many avoidable deaths, The Associated Press has found. (AP Photo/Andy Wong, File)
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Ignoring experts, China’s sudden zero-COVID exit cost lives
Mark Schiefelbein
FILE - Liang Wannian, left, then Chinese co-leader of the joint China-WHO investigation into the origins of the COVID-19 pandemic, speaks with a staff member before a press conference in Beijing, March 31, 2021. China's sudden reopening after two years holding to a "zero-COVID" strategy left older people vulnerable and hospitals and pharmacies unprepared during the season when the virus spreads most easily, leading to many avoidable deaths, The Associated Press has found. (AP Photo/Mark Schiefelbein, File)
Mark Schiefelbein
FILE - Liang Wannian, left, then Chinese co-leader of the joint China-WHO investigation into the origins of the COVID-19 pandemic, speaks with a staff member before a press conference in Beijing, March 31, 2021. China's sudden reopening after two years holding to a "zero-COVID" strategy left older people vulnerable and hospitals and pharmacies unprepared during the season when the virus spreads most easily, leading to many avoidable deaths, The Associated Press has found. (AP Photo/Mark Schiefelbein, File)
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Ignoring experts, China’s sudden zero-COVID exit cost lives
Mark Schiefelbein
FILE - Gao Fu, then head of the Chinese Center for Disease Control and Prevention (CDC), speaks to journalists after a press conference about a virus outbreak at the State Council Information Office in Beijing, Jan. 26, 2020. China's sudden reopening after two years holding to a "zero-COVID" strategy left older people vulnerable and hospitals and pharmacies unprepared during the season when the virus spreads most easily, leading to many avoidable deaths, The Associated Press has found. (AP Photo/Mark Schiefelbein, File)
Mark Schiefelbein
FILE - Gao Fu, then head of the Chinese Center for Disease Control and Prevention (CDC), speaks to journalists after a press conference about a virus outbreak at the State Council Information Office in Beijing, Jan. 26, 2020. China's sudden reopening after two years holding to a "zero-COVID" strategy left older people vulnerable and hospitals and pharmacies unprepared during the season when the virus spreads most easily, leading to many avoidable deaths, The Associated Press has found. (AP Photo/Mark Schiefelbein, File)
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Ignoring experts, China’s sudden zero-COVID exit cost lives
Ng Han Guan
FILE - Workers transfer a body into a container for temporary storage at crematorium overwhelmed after a recent COVID outbreak in Beijing, Dec. 17, 2022. China's sudden reopening after two years holding to a "zero-COVID" strategy left older people vulnerable and hospitals and pharmacies unprepared during the season when the virus spreads most easily, leading to many avoidable deaths, The Associated Press has found. (AP Photo/Ng Han Guan, File)
Ng Han Guan
FILE - Workers transfer a body into a container for temporary storage at crematorium overwhelmed after a recent COVID outbreak in Beijing, Dec. 17, 2022. China's sudden reopening after two years holding to a "zero-COVID" strategy left older people vulnerable and hospitals and pharmacies unprepared during the season when the virus spreads most easily, leading to many avoidable deaths, The Associated Press has found. (AP Photo/Ng Han Guan, File)
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Ignoring experts, China’s sudden zero-COVID exit cost lives
STR
FILE - Patients, most of them elderly with COVID symptoms, are gathered at the Changhai Hospital hall as they receive medical treatment, in Shanghai, China, Jan. 3, 2023. China's sudden reopening after two years holding to a "zero-COVID" strategy left older people vulnerable and hospitals and pharmacies unprepared during the season when the virus spreads most easily, leading to many avoidable deaths, The Associated Press has found. (Chinatopix Via AP, File)
STR
FILE - Patients, most of them elderly with COVID symptoms, are gathered at the Changhai Hospital hall as they receive medical treatment, in Shanghai, China, Jan. 3, 2023. China's sudden reopening after two years holding to a "zero-COVID" strategy left older people vulnerable and hospitals and pharmacies unprepared during the season when the virus spreads most easily, leading to many avoidable deaths, The Associated Press has found. (Chinatopix Via AP, File)
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Ignoring experts, China’s sudden zero-COVID exit cost lives
Ng Han Guan
FILE - An elderly man on a stretcher is wheeled into the fever clinic at a hospital in Beijing, Dec. 9, 2022. China's sudden reopening after two years holding to a "zero-COVID" strategy left older people vulnerable and hospitals and pharmacies unprepared during the season when the virus spreads most easily, leading to many avoidable deaths, The Associated Press has found. (AP Photo/Ng Han Guan, File)
Ng Han Guan
FILE - An elderly man on a stretcher is wheeled into the fever clinic at a hospital in Beijing, Dec. 9, 2022. China's sudden reopening after two years holding to a "zero-COVID" strategy left older people vulnerable and hospitals and pharmacies unprepared during the season when the virus spreads most easily, leading to many avoidable deaths, The Associated Press has found. (AP Photo/Ng Han Guan, File)