immunity

The state Department of Health documented nearly 3,000 more cases per week over the two weeks ending July 20 compared with the prior five weeks.

How does the hepatitis C virus keep the immune system at bay? A scientist finds the answer — and it involves a standard technique used by villains.

A new study of astronaut blood finds that space travel reduces the expression of 100 genes related to the immune system.

The main reason the surge is ebbing now, pandemic experts suspect, is the significant immunity many people in the U.S. have acquired from prior infections and COVID vaccinations many received.

Florida wrote natural immunity into state law this week as GOP lawmakers elsewhere are pushing similar measures to sidestep vaccine mandates.

As scientists argue whether a previous bout of COVID-19 voffers the same amount of protection as vaccinations, people turn to the courts to decide.

More social distancing led to fewer cases during the last flu season, but that means people didn’t have an opportunity to build immunity.

That's how some scientists describe the findings of a series of studies looking at the antibodies created by individuals who were infected by the coronavirus and then had an mRNA vaccine.

New studies look at how the mRNA vaccines affect the cells in your body in the short run and the long run. The findings are a counterpoint to concerns about waning immunity.

Scientists don't know whether people who have been exposed to the coronavirus will be immune for life, or if it can infect us again and again, like the common cold.