CNN.com - RSS Channel - HP HeroCoronavirus has been with us for a year. Here's what we still don't know.

When China first reported cases of coronavirus to the World Health Organization on December 31, 2019, it was described as a mysterious new strain of pneumonia. It didn't even have a name.

December 29, 2020 at 06:26AM https://ift.tt/3rAoVMF China first reported cases of coronavirus to the World Health Organization on December 31, 2019, it was described as a mysterious new strain of pneumonia. It didn't even have a name.