People wearing masks to take precautions against the virus (left) and medics at a Hospital where the deadly Wuhan virus is being treated.

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The death toll of a coronavirus outbreak sweeping China has hit 41, with nearly 1,300 people infected worldwide.

The New York Times reported the updated figures as of Saturday morning local time.

The virus is thought to have originated at a wet market in the city of Wuhan, and has spread to at least 10 other countries: Thailand, Japan, South Korea, Taiwan, Vietnam, Singapore, Nepal, France, Australia, Malaysia and the US. 

Two US cases have been reported so far: A man in his 30s in Washington state and a woman in her 60s in Chicago. Three patients in France, announced on Friday, are the first in Europe.

Here’s everything we know:

The first case of the virus was reported in Wuhan in December. The central Chinese city has a population of 11 million.


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Its pneumonia-like symptoms include fever and difficulty breathing.


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According to the Centers for Disease Control, a person could be at risk if they have:

  • Fever and symptoms of lower respiratory illness, such as coughing or difficulty breathing, after traveling to Wuhan or having close contact with someone who was ill and is now under investigation for the virus in the past two weeks.
  • Fever or symptoms of lower respiratory illness after having close contact in the past two weeks with someone who’s been confirmed to have the virus.

As of Friday, the virus has killed 41 people.

A man leaves a medical center in Wuhan, China.

Noel Celis/AFP via Getty Images


“The people who are likely to die first will have other illnesses,” Adrian Hyzler, the chief medical officer at Healix International, which offers risk-management solutions for global travelers, told Business Insider.

“But as it spreads, it’ll pick up more people like flu does.”

Most patients who died were elderly or otherwise unwell, according to Chinese officials. But it can also kill younger people: one recent victim was a 36-year-old man.

A total of 1,287 people in China have been infected.

A vendor gives out copies of newspaper with headlines about the coronavirus outbreak in Hong Kong on January 11, 2020.

Associated Press


Chinese authorities launched an investigation in the first week of January, amid fears that the virus could be like SARS. That coronavirus also originated in China and killed 774 people from November 2002 to July 2003.

A doctor checks equipment at a Severe Acute Respiratory Syndrome (SARS) screening room at Kuala Lumpur International Airport in Malaysia in 2003.

AHMAD YUSNI / AFP) (Photo by AHMAD YUSNI/AFP via Getty Images


This coronavirus is not as deadly as SARS, though the two belong to the same family.

Many coronaviruses are not very serious and only threaten people with weakened immune systems.

Medical staff members carry a patient into the Jinyintan hospital, where patients infected by a coronavirus are being treated, in Wuhan, China, January 18, 2020.

STR/AFP via Getty Images


But there are still ways to protect yourself. Travelers should avoid touching their eyes, nose, or mouth with unwashed hands.

Travelers wearing masks arrive on a direct flight from China at Seattle-Tacoma International Airport.

Reuters


There are no vaccines to protect humans from contracting a coronavirus. Travelers should wash their hands frequently with soap and water, making sure to scrub for at least 20 seconds, the CDC says.

Wearing a mask might shield you from other people’s sneezes and coughs, but it’s not the most important line of defense against a virus. 

“There’s little harm in it,” Eric Toner, a senior scientist at Johns Hopkins University, told Business Insider. “But wearing masks, except in the situation of a healthcare provider, has never been shown to be a very effective way to protect yourself from infectious diseases.”

For now, health experts believe the virus could be milder than SARS.

“On the other hand, it may be more transmissible than SARS, at least in the community setting,” Toner said.

Scientists are still learning about the virus’ incubation period — the time between when a patient gets infected and when they start showing symptoms. During that period, people can be contagious without realizing they’re sick.

Health officials believe the coronavirus outbreak came from a seafood market in Wuhan.

The Huanan Seafood Wholesale Market in Wuhan, China, which was sealed off after being identified as the epicenter of a new virus.

Photo by Noel Celis/AFP via Getty Images


They initially said the virus could only spread from animals to humans. But on January 20, Chinese officials confirmed that the virus can be transferred from person to person as well.

“Now we can say it is certain that it is a human-to-human transmission phenomenon,” Zhong Nanshan, the scientist the Chinese government appointed to lead the effort to battle the disease, said.

Early research suggests the virus might have jumped from bats to snakes, then to humans.

Snakes hang from a wooden cabinet at a snake soup shop in Hong Kong.

Reuters/Bobby Yip


In a paper in the Journal of Medical Virology, researchers revealed that the protein codes favored by the Wuhan virus closely resemble the protein codes in snakes.

Since snakes often hunt bats in the wild — and they were sold at the seafood market in Wuhan — the researchers think the virus may have originated in bats before mutating and infecting humans

On Thursday, local officials quarantined the city of Wuhan by shutting down all transportation.

Health officials in hazmat suits check body temperatures of passengers arriving from Wuhan on January 22, 2020, at the airport in Beijing, China.

Emily Wang/AP


All of the city’s public transportation — including buses, metros, ferries, and train — were shut down as of 10 a.m. local time on Thursday. Trains and airplanes coming in and out of the city were halted and roadblocks were installed to keep taxis and private cars from exiting.

Wuhan’s 11 million residents have been told not to leave the city, barring special circumstances.

Doctors in Wuhan report that there aren’t enough resources to treat a rising tide of patients.

Medical staff members at the Zhongnan hospital in Wuhan.

STR/AFP via Getty Images


A doctor in Wuhan told the BBC that thousands of patients were waiting for hours in line to receive medical care. Another doctor told the South China Morning Post that medical workers did not have enough protective gear — and that some were catching the virus as a result.

Test kits have been reserved for patients with the most severe symptoms. This means many diagnoses are delayed.

Guards wearing face masks at Hankou Railway Station on January 22, 2020, in Wuhan, China.

Xiaolu Chu/Getty Images)


Mimi Lau, a reporter at the South China Morning Post, said patients in Wuhan hospitals have likened getting a kit to winning the lottery.

The city is rushing to build a new hospital in just six days.

Excavators at the construction site of a new hospital being built to treat patients from a deadly virus outbreak in Wuhan.

STR/AFP via Getty Images


The new hospital will have 1,000 beds for treating patients. It is expected to be operational by February 3.

As of Friday, China had imposed travel restrictions on at least 12 cities in the Hubei province.

A man rides his bicycle past the closed Hankou Railway Station in Wuhan after a lockdown was imposed.

Associated Press


The city Huanggang, home to around 7.5 million people, placed its urban core under lockdown on Thursday, closing subway and train stations as well as theaters and internet cafes.

Additional cities — Ezhou, Chibi, Xiantao, Zhijiang, Qianjjiang, Huangshi, Xianning, Yichang, Enshi, and Suizhou — have followed suit with their own travel restrictions.

The restrictions so far affect an estimated 33 million people.

The virus has spread to at least 10 other countries and many other parts of China, including Beijing, Guangdong province, Zhejiang province, Tianjin, and Shanghai.

People wearing protective masks arrive at Beijing railway station to head home for the Lunar New Year on January 21, 2020.

NICOLAS ASFOURI/AFP via Getty Images


Cases are also suspected in more regions of China.

Outside of China, at least 11 countries have confirmed cases.

A health surveillance officer monitors passengers arriving at the Hong Kong International airport in Hong Kong on January 4, 2020.

Associated Press


These are the countries to report confirmed cases, and the number:

Thailand: 5
Singapore: 3
France: 3
Malaysia: 3
United States: 2
Japan: 2
South Korea: 2
Vietnam: 2
Nepal: 1
Taiwan: 1
Australia: 1

“I think we’re going to see cases popping up in cities all over the world,” Hyzler said. This chart shows the rate at which the virus is spreading.

This map shows where the virus has spread so far.

Hyzler added that he worries a single person with the virus could infect 10, 20, or 30 people.

The true number of infected people is probably higher than the official total.

Medical staff carry a box by the Jinyintan hospital in Wuhan, which houses patients with the Wuhan coronavirus, on January 10, 2020.

Reuters


As of Thursday, academics from Imperial College London estimated that the true number of infected people might be between 4,000 and 9,700.

Chinese officials have warned that the virus is mutating, which could make it harder to control and treat.

Passengers wearing masks walk by as a quarantine officer, center, monitors a thermography during a quarantine inspection at Kansai international airport in Osaka, Japan, January 22, 2020.

Associated Press


Gao Fu, the director-general of China’s Center for Disease Control and Prevention, said on Wednesday that the virus was adapting and changing — making it harder to fight.

Airports around the world are implementing screening protocols.

Public Health Officials run thermal scans on passengers arriving from Wuhan, China at Suvarnabumi Airport on January 8, 2020 in Bangkok, Thailand.

Lauren DeCicca/Getty Images


Five US airports — New York’s JFK airport, San Francisco International Airport, Los Angeles International Airport, Hartsfield-Jackson airport in Atlanta, and Chicago’s O’Hare airport — have started screening passengers for the virus.

Airports in Hong Kong, Singapore, Thailand, and South Korea are also screening people.

The outbreak comes as as hundreds of millions prepare to travel for the weeks-long Chinese New Year, which is one of the largest annual human migrations in the world.

Passengers waiting to board trains at Shanghai’s Hongqiao Railway Station ahead of the Chinese Lunar New Year in February 2018.

Aly Song/Reuters


The holiday starts this weekend, and experts worry the surge in travel could boost the virus’ spread.

“This couldn’t have happened at a worse time for Wuhan,” Hyzler said.

Beijing canceled its Spring Festival celebrations on Thursday.

A New Year celebration in Beijing.

China Photos / Stringer / Getty


Shanghai Disneyland is slated to close down on Saturday, along with other attractions.


Bobby Yip/Reuters


The announcement comes at a time of peak spending at the park, which has said it will refund tickets

The Badaling section of the Great Wall of China is scheduled to temporarily close on Saturday as well. 

Earlier this week, Chinese health officials said the virus is “still preventable and controllable.”

Medical staff members carry a patient into the Jinyintan hospital, where virus patients are being treated, in Wuhan in China’s central Hubei province on January 18, 2020.

STR/AFP via Getty Images


The World Health Organization said on Thursday that it is “too early” to consider the outbreak a public-health emergency.

The World Health Organisation (WHO) assembly in Geneva, Switzerland, in May 2008.

FABRICE COFFRINI/AFP via Getty Images


“There is no evidence of human-to-human transmission outside China, but that doesn’t mean it won’t happen,” director-general Tedros Adhanom Ghebreyesus said at a press conference. “WHO is following this outbreak every minute of every day.”

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