Active Immunity News Today

Natural immunity is a subtype of active immunity. Here’s what you need to know about how it’s acquired and how it protects you.

Roadblock no. 1 to herd immunity: COVID-19 variants First of all, lets talk about the variants. "Viruses mutate constantly, so most mutations do nothing," said Wachter. "What were seeing now with the U.K., the Brazilian and the South African variant is interesting, because it shows that variants can change in all sorts of ways. They can make (viruses) more infectious, they can make them more serious -- meaning equally infectious, but if you happen to get it youre likely to get sicker -- and/or ...