Shanghai airport strengthens measures(1/11)

Workers spray disinfectant fluid on shoes of a passenger at the Shanghai’s Pudong International Airport, Mar. 16, 2020. Shanghai authorities step up preventive measures at the city's Pudong International Airport to curb the spread of the novel coronavirus from overseas. New measures require that all travelers from countries severely affected by the virus arriving at the airport be subject to epidemiological investigation. As of March 13, 2020, a total of 4,961 travelers fly in from such countries have been in quarantine at 18 designated centers in Pudong area. (Photo: China News Service/Yin Liqin)

Staff takes temperature of a traveler at the Shanghai’s Pudong International Airport, Mar. 16, 2020. (Photo: China News Service/Yin Liqin)

A worker wearing protective suit checks temperature of a passenger at the Shanghai’s Pudong International Airport, Mar. 16, 2020. (Photo: China News Service/Yin Liqin)

A worker brings a package to a passenger at a quarantine center in Shanghai, Mar. 16, 2020. (Photo: China News Service/Yin Liqin)

Workers bring packages to passengers at a quarantine center in Shanghai, Mar. 16, 2020. (Photo: China News Service/Yin Liqin)

Workers contract with passengers in quarantine on phone in Shanghai, Mar. 16, 2020.(Photo: China News Service/Yin Liqin)

A woman shows gratitude to a staff member after finishing her quarantine, Mar. 16, 2020. (Photo: China News Service/Yin Liqin)

A staff member sprays disinfectant fluid at a quarantine center in Shanghai, Mar. 16, 2020. (Photo: China News Service/Yin Liqin)

A man follows staff members at a quarantine center in Shanghai, Mar. 16, 2020. (Photo: China News Service/Yin Liqin)

Staff members spray disinfectant fluid on luggage of a woman who just finishes her quarantine. (Photo: China News Service/Yin Liqin)

A staff member takes temperature of a boy at a quarantine center in Shanghai, Mar. 16, 2020. (Photo: China News Service/Yin Liqin)