Preliminary laboratory studies find antibodies from previous infections and vaccinations can neutralize the BA.2.86 variant. The findings bode well for new boosters on the way this fall.

My 6-year-old has been exposed to SARS-CoV-2 at least four times and never tested positive. Many people fall into that category. Researchers have theories about why they've been able to ward it off.

Answer a few questions and find out what kind of immune cell you'd be — and learn more about these amazing cells that fight off infection.

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.

The short answer is — no. Immunology experts say there is little to be gained, for now, from an antibody test, for a number of reasons.

Researchers are trying to come up with tests that can be performed using a blood sample that will determine not only whether a COVID-19 vaccine will work but also for how long.

Experimental medicines have the potential to help people with COVID-19 avoid hospitalization. The scarce supply of the treatments would have to be rationed, if regulators OK their use.

A growing number of researchers think until there's an effective vaccine, the coronavirus will simply persist in the population, causing illness indefinitely. Better to squelch the spread instead.

Data from the CDC estimates that roughly 10 times the amount of people have the virus than have been documented. The number is still far below what experts say would be needed for widespread immunity.