If you have never watched the movie Virus (復活の日, Fukkatsu no hi), now is the perfect time.
https://en.wikipedia.org/wiki/Virus_(1980_film)
In 1982, a shady transaction is occurring between an East German scientist, Dr. Krause, and a group of Americans involving a substance known as MM88. MM88 is a deadly virus, created accidentally by an American geneticist, that amplifies the potency of any other virus or bacterium it comes into contact with. The Americans recover the virus sample, which was stolen from a lab in the US the year before, but the virus is accidentally released after the plane transporting it crashes, creating a pandemic initially known as the Italian Flu. Within seven months, virtually all the world's population has died off. However, the virus is inactive at temperatures below -10 degrees Celsius, and the polar winter has spared the 855 men and eight women stationed in Antarctica...
Even though Virus was the most expensive Japanese film ever made when it was released it's now public domain and you can watch it for free!
https://archive.org/details/VirusFukkatsuNoHi1980
https://archive.org/details/cco_virus (short edit for US audience)