"What is herd immunity and can it stop the coronavirus?"

in #corona2 years ago

"Two years later, in 2017, there was no longer nearly so much to worry about. A Brazilian study found by checking blood samples that 63% of the population in the northeastern beach city of Salvador had already had exposure to Zika; the researchers speculated that herd immunity had broken that outbreak."

Screen Shot 2020-03-29 at 11.47.17 AM.png