herd immunity

Scientists say the pandemic will end in the U.S. only when we achieve what's called herd immunity. Play with our simulations to see how immunity can stop an outbreak in its tracks.

Dr. Fauci said once the vaccine becomes widely available, if by "April, May, June, July, we get as many people vaccinated as possible, we could really turn this thing around" by the end of 2021.

The term has found its way into politicized discussions about how to overcome the COVID-19 pandemic. But what does it actually mean? And does it work?

The U.S. reported more than 55,000 infections Friday, pushing the total number of cases to more than 7 million. Some two dozen states saw new cases continue to rise this past week.

As cases of the coronavirus surge across Florida, some suggest herd immunity could be a solution. It's the idea of fighting a disease by making a majority…

The waning of Zika outbreaks in the Caribbean and South America has helped slow the spread of the mosquito-borne virus in Florida this year, according...