immunity

When will the United States be able to achieve herd immunity? It is complicated.

COVID-19 immunity now stands at 20-25% in Salt Lake County residents, data show

How long does immunity last after COVID-19? What we know

Johns Hopkins doctor believes COVID will have largely disappeared in April, half the U.S. has herd immunity

We will have immunity to the herd in April

California Hospital sees staff’s COVID-19 infections drop to “single digits” after achieving collective immunity

How will we know that we have achieved collective immunity?

How will we know that we have achieved collective immunity?

Extreme weather can delay the achievement of collective immunity, experts warn

Extreme weather can delay the achievement of collective immunity, experts warn

Utah is starting to have collective immunity, says Intermountain doctor

Utah is starting to have collective immunity, says Intermountain doctor