Coronavirus outbreak spreads in China

Paramilitary police officers wearing masks are seen at Shanghai railway station in Shanghai, China January 22, 2020. Deaths from China's new flu-like virus rose to 17 on Wednesday, with more than 540 cases confirmed, leading the city at the centre of...more

A staff member wearing a mask monitors thermal scanners that detect temperatures of passengers at the security check inside the Hankou Railway Station in Wuhan, Hubei province, China January 21, 2020. The previously unknown coronavirus strain is...more

A Chinese tourist wears a mask as he arrives at Suvarnabhumi Airport during a welcome ceremony of Chinese Lunar New Year travellers in Bangkok, Thailand January 22, 2020. The outbreak worried financial markets as investors recalled China's Severe...more

Officials monitor thermal scanners at a temperature monitoring station at Portas do Cerco in Macau, China, January 8, 2020. The official China Daily newspaper said 544 cases had now been confirmed in the country. Thailand has confirmed four cases,...more

A Chinese tourist wears a mask as she arrives at Suvarnabhumi Airport during a welcome ceremony of Chinese Lunar New Year travellers in Bangkok, Thailand January 22, 2020. REUTERS/Soe Zeya Tun

A tourist wearing a mask visits Tiananmen Square in Beijing, China January 22, 2020. REUTERS/Jason Lee

Foxconn employees wearing masks attend the company's year-end gala in Taipei, Taiwan January 22, 2020. REUTERS/Yimou Lee

Medical staff transfer a patient at the Jinyintan hospital, where the patients with pneumonia caused by the new strain of coronavirus are being treated, in Wuhan, Hubei province, China January 20, 2020. REUTERS/Stringer

A worker in a protective suit is seen at the closed seafood market in Wuhan, Hubei province, China January 10, 2020. The seafood market is linked to the outbreak of pneumonia caused by the new strain of coronavirus, but some patients diagnosed with...more

Security personnel wearing a mask stands guard outside the security check at the Beijing West Railway Station, in Beijing, China January 20, 2020. REUTERS/Stringer

Medical staff is seen by a window at the Jinyintan hospital, where the patients with pneumonia caused by the new strain of coronavirus are being treated, in Wuhan, Hubei province, China January 20, 2020. REUTERS/Stringer

Medical staff carry a box as they walk at the Jinyintan hospital, where the patients with pneumonia caused by the new strain of coronavirus are being treated, in Wuhan, Hubei province, China January 10, 2020. REUTERS/Stringer

A police officer wearing a mask stands in front of the closed seafood market in Wuhan, Hubei province, China January 10, 2020. REUTERS/Stringer

Medical staff and security personnel stop patients' family members from being too close to the Jinyintan hospital, where the patients with pneumonia caused by the new strain of coronavirus are being treated, in Wuhan, Hubei province, China January...more

People wearing masks walk through an underground passage to the subway in Beijing, China January 21, 2020. REUTERS/Jason Lee

People wearing masks walk down the steps at a subway station in Beijing, China January 21, 2020. REUTERS/Tingshu Wang

Aviation security officers wearing medical masks stand guard at international arrival terminal of Soekarno Hatta airport near Jakarta, Indonesia, January 21, 2020. REUTERS/Willy Kurniawan

A woman and a child wearing masks stand on a street in Hangzhou, Zhejiang province, China January 21, 2020. China Daily via REUTERS

People line up outside a drugstore to buy masks in Shanghai, China January 21, 2020. REUTERS/Aly Song

Passengers wearing masks are seen at Shanghai railway station in Shanghai, China January 21, 2020. REUTERS/Aly Song

Passengers wearing masks are seen on a train at Shanghai railway station in Shanghai, China January 21, 2020. REUTERS/Aly Song

Passengers wearing masks are seen on a train at Shanghai railway station in Shanghai, China January 21, 2020. REUTERS/Aly Song

Kazakh sanitary-epidemiological service worker uses a thermal scanner to detect travellers from China who may have symptoms possibly connected with the previously unknown coronavirus, at Almaty International Airport, Kazakhstan January 21, 2020....more

A single pack of mask is seen on an empty shelf that used to display masks for sale at a store in Beijing, China January 21, 2020. REUTERS/Jason Lee

Malaysian health quarantine officer waits for passengers at thermal screening point at international arrival terminal of Kuala Lumpur International Airport in Sepang, Malaysia, January 21, 2020. REUTERS/Lim Huey Teng

Passengers pass by a banner about Wuhan Pneumonia at thermal screening point at international arrival terminal of Kuala Lumpur International Airport in Sepang, Malaysia, January 21, 2020. REUTERS/Lim Huey Teng

A woman wearing a mask walks past a quarantine notice about the outbreak of coronavirus in Wuhan, China at an arrival hall of Haneda airport in Tokyo, Japan, January 20, 2020. REUTERS/Kim Kyung-Hoon

People walk out from a metro station outside Beijing Railway Station during the annual Spring Festival travel rush ahead of the Chinese Lunar New Year, in Beijing, China January 20, 2020. REUTERS/Carlos Garcia Rawlins

Passengers wearing masks are seen at the waiting area for a train to Wuhan at the Beijing West Railway Station, ahead of the Chinese Lunar New Year, in Beijing, China January 20, 2020. REUTERS/Stringer

A woman wearing a mask is seen at a waiting area for a train to Wuhan at the Beijing West Railway Station, ahead of Chinese Lunar New Year, in Beijing, China January 20, 2020. REUTERS/Stringer

A rescue worker walks past a notice about new coronavirus that has broken out in China, at a hospital where a Chinese woman, who flew from Wuhan, China, and has been confirmed its first case of a new coronavirus, is isolated, in Incheon, South Korea,...more

Tourist line-up in a health control at the arrival section at Suvarnabhumi international airport in Bangkok, Thailand, Januaruy 19, 2020. REUTERS/Jorge Silva

Officials measure temperatures of passengers on board on an Air China flight from Wuhan to Macau, China, January 1, 2020. Picture taken January 1, 2020. MACAU SAR HEALTH BUREAU/Handout via REUTERS. ATTENTION EDITORS - THIS IMAGE HAS BEEN SUPPLIED BY...more