15 Matching Annotations
  1. Last 7 days
  2. Feb 2021
  3. Jan 2021
  4. Aug 2020
    1. a new strain of influenza virus against which no previous immunity exists and that demonstrates human-to-human transmission could result in a pandemic with millions of fatalities2
  5. Jul 2020
  6. May 2020
  7. Apr 2020