Wuhan - In early January, authorities in the Chinese city of Wuhan were trying to keep news of a new coronavirus from spreading.
One doctor tried to warn fellow medics about the outbreak, police paid him a visit and told him to stop. A month later he has been hailed as a hero, after he posted his story from a hospital bed.
"Hello everyone, this is Li Wenliang, an ophthalmologist at Wuhan Central Hospital," the post begins.
Dr Li was working at the centre of the outbreak in December when he noticed seven cases of a virus that he thought looked like Sars - the virus that led to a global epidemic in 2003.
The cases were thought to come from the Huanan Seafood market in Wuhan and the patients were in quarantine in his hospital.
"Quarantined in the emergency department," doctor Li Wenliang wrote in an online chat group on Dec. 30, referring to patients.
A mysterious illness had stricken seven patients at his hospital, and the doctor tried to warn his medical school classmates.
"So frightening," one recipient replied, before asking about the epidemic that began in China in 2002 and ultimately killed nearly 800 people. "Is SARS coming again?"
What Dr Li didn't know then was that the disease that had been discovered was an entirely new coronavirus.
In the middle of the night, officials from the health authority in the central city of Wuhan summoned Li, demanding to know why he had shared the information.
Three days later, police compelled him to sign a statement that his warning constituted "illegal behavior."
"We solemnly warn you: If you keep being stubborn, with such impertinence, and continue this illegal activity, you will be brought to justice - is that understood?"
Underneath in Dr Li's handwriting is written: "Yes, I do."
At the end of January, Dr Li published a copy of the letter on Weibo and explained what had happened. In the meantime, local authorities had apologised to him but that apology came too late.
The illness was not SARS, but something similar: a coronavirus that is now on a relentless march outward from Wuhan, throughout the country and across the globe, killing more than 400 people in China and infecting more than 17000 worldwide.
The government's initial handling of the epidemic allowed the virus to gain a tenacious hold. At critical moments, officials chose to put secrecy and order ahead of openly confronting the growing crisis to avoid public alarm and political embarrassment.
A reconstruction of the crucial seven weeks between the appearance of the first symptoms in early December and the government's decision to lock down the city, based on two dozen interviews with Wuhan residents, doctors and officials, on government statements and on Chinese media reports, points to decisions that delayed a concerted public health offensive.
In those weeks, authorities silenced doctors and others for raising red flags. They played down the dangers to the public, leaving the city's 11 million residents unaware they should protect themselves. They closed a food market where the virus was believed to have started, but told the public it was for renovations.
Their reluctance to go public, in part, played to political motivations as local officials prepared for their annual congresses in January. Even as cases climbed, officials declared repeatedly that there had likely been no more infections.
By not moving aggressively to warn the public and medical professionals, public health experts say, the Chinese government lost one of its best chances to keep the disease from becoming an epidemic.
"This was an issue of inaction," said Yanzhong Huang, a senior fellow for global health at the Council on Foreign Relations who studies China. "There was no action in Wuhan from the local health department to alert people to the threat."
The first case
Details of which are limited and the specific date unknown, was in early December. By the time authorities galvanized into action on Jan. 20, the disease had grown into a formidable threat.
It is now a global health emergency. It has triggered travel restrictions around the world, shaken financial markets and created perhaps the greatest challenge yet for China's leader, Xi Jinping. The crisis could upend Xi's agenda for months or longer, even undermining his vision of a political system that offers security and growth in return for submission to iron-fisted authoritarianism.
On the last day of 2019, after Li's message was shared outside the group, authorities focused on controlling the narrative. Police announced that they were investigating eight people for spreading rumors about the outbreak.
That same day, Wuhan's health commission, its hand forced by those "rumors," announced that 27 people were suffering from pneumonia of an unknown cause. Its statement said there was no need to be alarmed.
"The disease is preventable and controllable," the statement said.
Li, an ophthalmologist, went back to work after being reprimanded. On Jan. 10, he treated a woman for glaucoma. He did not know she had already been infected with the coronavirus, probably by her daughter. They both became sick. So would he.
Hu Xiaohu, who sold processed pork in the Huanan Seafood Wholesale Market, sensed by late December that something was amiss. Workers were coming down with nagging fevers. No one knew why but, Hu said, several were in hospital quarantine.
The market occupies much of a block in a newer part of the city, sitting incongruously near apartment buildings and shops catering to the growing middle class. It is a warren of stalls selling meats, poultry and fish, as well as more exotic fare, including live reptiles and wild game that some in China prize as delicacies. According to a report by the city's center for disease control, sanitation was dismal, with poor ventilation and garbage piled on wet floors.
In hospitals, doctors and nurses were puzzled to see a cluster of patients with symptoms of a viral pneumonia that did not respond to the usual treatments. They soon noticed that many patients had one thing in common: They worked in Huanan market.
On Jan. 1, police officers showed up at the market, along with public health officials, and shut it down. Xinhua News Agency reported that the market was undergoing renovation, but that morning, workers in hazmat suits moved in, washing out stalls and spraying disinfectants.
It was, for the public, the first visible government response to contain the disease. The day before, on Dec. 31, national authorities had alerted the World Health Organization's office in Beijing of an outbreak.
City officials struck optimistic notes in their announcements. They suggested they had stopped the virus at its source. The cluster of illnesses was limited. There was no evidence the virus spread between humans.
"Projecting optimism and confidence, if you don't have the data, is a very dangerous strategy," said Alexandra Phelan, a faculty research instructor in the department of microbiology and immunology at Georgetown University.
"It undermines the legitimacy of the government in messaging," she added. "And public health is dependent on public trust."
Nine days after the market closed, a man who shopped there regularly became the first fatality of the disease, according to a report by the Wuhan Health Commission, the agency that oversees public health and sanitation. The 61-year-old, identified by his last name, Zeng, already had chronic liver disease and a tumor in his abdomen, and had checked into Wuhan Puren Hospital with a raging fever and difficulty breathing.
Authorities disclosed the man's death two days after it happened. They did not mention a crucial detail in understanding the course of the epidemic. Zeng's wife had developed symptoms five days after he did.
She had never visited the market.
About 20 miles from the market, scientists at the Wuhan Institute of Virology were studying samples from the patients checking into the city's hospitals. One of the scientists, Zheng-Li Shi, was part of the team that tracked down the origins of the SARS virus, which emerged in the southern province of Guangdong in 2002.
As the public remained largely in the dark about the virus, she and her colleagues quickly pieced together that the new outbreak was related to SARS. The genetic composition suggested a common initial host: bats. The SARS epidemic began when a coronavirus jumped from bats to Asian palm civets, a catlike creature that is legally raised and consumed. It was likely that this new coronavirus had followed a similar path - possibly somewhere in or on the way to the Huanan market or another market like it.
Around the same time, Li and other medical professionals in Wuhan started trying to provide warnings to colleagues and others when the government did not. Lu Xiaohong, the head of gastroenterology at City Hospital No. 5, told China Youth Daily that she had heard by Dec. 25 that the disease was spreading among medical workers - a full three weeks before authorities would acknowledge the fact. She did not go public with her concerns, but privately warned a school near another market.
By the first week of January, the emergency ward in Hospital No. 5 was filling; the cases included members of the same family, making it clear that the disease was spreading through human contact, which the government had said was not likely.
No one realized, the doctor said, that it was as serious as it would become until it was too late to stop it.
"I realized that we had underestimated the enemy," she said.
At the Institute of Virology, Shi and her colleagues isolated the genetic sequence and the viral strain during the first week of January. They used samples from seven of the first patients, six of them vendors at the market.
On Jan. 7, the institute's scientists gave the new coronavirus its identity and began referring to it by the technical shorthand nCoV-2019. Four days later, the team shared the virus' genetic makeup in a public database for scientists everywhere to use.
That allowed scientists around the world to study the virus and swiftly share their findings. As the scientific community moved quickly to devise a test for exposure, political leaders remained reluctant to act.
As the virus spread in early January, the mayor of Wuhan, Zhou Xianwang, was touting futuristic health care plans for the city.
It was China's political season, when officials gather for annual meetings of People's Congresses - the Communist Party-run legislatures that discuss and praise policies. It is not a time for bad news.
When Zhou delivered his annual report to the city's People's Congress on Jan. 7 against a backdrop of bright red national flags, he promised the city top-class medical schools, a World Health Expo, and a futuristic industry park for medical companies. Not once did he or any other city or provincial leader publicly mention the viral outbreak.
"Stressing politics is always No. 1," the governor of Hubei, Wang Xiaodong, told officials on Jan. 17, citing Xi's precepts of top-down obedience. "Political issues are at any time the most fundamental major issues."
Shortly after, Wuhan went ahead with a massive annual potluck banquet for 40,000 families from a city precinct, which critics later cited as evidence that local leaders took the virus far too lightly.
As the congress was taking place, the health commission's daily updates on the outbreak said again and again that there were no new cases of infection, no firm evidence of human transmission and no infection of medical workers.
"We knew this was not the case!" said a complaint later filed with the National Health Commission on a government website. The anonymous author said he was a doctor in Wuhan and described a surge in unusual chest illnesses beginning Jan. 12.
Officials told doctors at a top city hospital "don't use the words viral pneumonia on the image reports," according to the complaint, which has since been removed. People were complacent, "thinking that if the official reports had nothing, then we were exaggerating," the doctor explained.
Even those stricken felt lulled into complacency.
When Dong Guanghe developed a fever on Jan. 8 in Wuhan, his family was not alarmed, his daughter said. He was treated in the hospital and sent home. Then, 10 days later, Dong's wife fell ill with similar symptoms.
"The news said nothing about the severity of the epidemic," said the daughter, Dong Mingjing. "I thought that my dad had a common cold."
The government's efforts to minimize public disclosure persuaded more than just untrained citizens.
"If there are no new cases in the next few days, the outbreak is over," Guan Yi, a respected professor of infectious diseases at the University of Hong Kong, said on Jan. 15.
The World Health Organization's statements during this period echoed the reassuring words of Chinese officials.
It had spread. Thailand reported the first confirmed case outside China on Jan. 13.