events
The World Health Organization issues its first emergency use validation for a COVID-19 vaccine.
Related Wikipedia articles
COVID-19 vaccine
Vaccine against SARS-CoV-2
A COVID‑19 vaccine is a vaccine intended to provide acquired immunity against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the virus that causes coronavirus disease 2019 (COVID‑19).Source: Wikipedia (CC BY-SA)
December 31
Day of the year
December 31 is the 365th day of the year in the Gregorian calendar. It is known by a collection of names including: Saint Sylvester's Day, New Year's Eve or Old Year's Day/Night, as the following day is New Year's Day. It is the last day of the year; the following day is January…Source: Wikipedia (CC BY-SA)