How long will your COVID-19 vaccine protect you?
https://www.mercurynews.com/2021/05/30/how-long-are-we-protected-from-covid-19-after-vaccination-or-infection/
Ninety years after the deadly 1918 flu pandemic, the immune systems of survivors still remembered and could neutralize the murderous strain.
Will our body’s memory of COVID-19 stay just as sharp?
