Hong Kong researchers say man got Covid-19 twice

With the US death toll from coronavirus passing 177,000, researchers in China say a 33-year-old man living in in Hong Kong is the first person confirmed to have been reinfected with the virus. CNN’s Brian Todd reports.

With the US death toll from coronavirus passing 177,000, researchers in China say a 33-year-old man living in in Hong Kong is the first person confirmed to have been reinfected with the virus. CNN’s Brian Todd reports.