At airports in Asia, authorities have screened thousands of people before they identified the one or two individual cases, he said. But the emergence of a new respiratory illness that originated from an animal has raised concerns among health officials and infectious disease experts. The first had been a regular customer at the market, but health authorities have not said whether the second had contact with it. Of the 45 cases, four — all men — were reported late Friday, Wuhan health authorities said. ADControlling transmission and finding the animal source are key, health officials say.

Source: Washington Post January 17, 2020 19:01 UTC