Maria D Van Kerkhove, World Health Organization Head AI Emerging Diseases and Zoonoses Units, speaks during a press conference following an emergency committee over the new SARS-like virus spreading
in China and other nations, in Geneva on January 22, 2020.World Health Organization officials said not all people who recover from the coronavirus have the antibodies to fight a second infection, raising questions as to whether or not patients develop immunity after surviving Covid-19.
"With regards to recovery and then re-infection, I believe we do not have the answers to that. That is an unknown," Dr. Mike Ryan, executive director of WHO's emergencies programs, said at a press conference at the organization's Geneva headquarters on Monday.
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