A passenger walks past a thermal screening as she arrives at international arrival terminal of Soekarno Hatta airport near Jakarta, Indonesia, January 21, 2020. Indonesia Airport increased alertness on Tuesday after receiving report of human-to-human transmission of the Wuhan coronavirus from China. REUTERS/Willy Kurniawan

Aviation security officers wearing medical masks stand guard at international arrival terminal of Soekarno Hatta airport near Jakarta, Indonesia, January 21, 2020. Jakarta's Soekarno-Hatta International Airport used thermal imaging to monitor the possibility of disease transmission in Indonesia. Arriving passengers with higher temperature will be individually inspected and brought to a clinic for further testing. Officers also hand out Health Alert Card to aid doctors in early identification. REUTERS/Willy Kurniawan

A health quarantine officer checks a monitor of thermal screening at international arrival terminal of Soekarno Hatta airport near Jakarta, Indonesia, January 21, 2020. Indonesia has not detected any cases of the new coronovirus currently. The airport and health officials said they were waiting for further updates from the World Health Organisation. REUTERS/Willy Kurniawan

Passenger walks past a thermal screening as she arrives at international arrival terminal of Soekarno Hatta airport near Jakarta, Indonesia, January 21, 2020. The death toll from the coronavirus outbreak in China climbed to six on Tuesday with 291 infected, as authorities reported a surge in new cases, with fears that hundreds of millions of people travelling for the Lunar New Year holiday will accelerate the infection rate. REUTERS/Willy Kurniawan

Indonesian health quarantine officers wait for passengers at thermal screening point at international arrival terminal of Soekarno Hatta airport near Jakarta, Indonesia, January 21, 2020. Indonesia Airport increased alertness on Tuesday after receiving report of human-to-human transmission of the Wuhan coronavirus from China. REUTERS/Willy Kurniawan

Passengers walk past a thermal screening as they arrive at international arrival terminal of Soekarno Hatta airport near Jakarta, Indonesia, January 21, 2020. Indonesia Airport increased alertness on Tuesday after receiving report of human-to-human transmission of the Wuhan coronavirus from China. REUTERS/Willy Kurniawan