MoreBack to News Headlines

What we know so far about Covid-19 immunity -- and what it means for vaccine boosters
CNN
Since the start of the pandemic, scientists have been seeking to better understand immunity to the novel coronavirus. How long is a person immune after having Covid-19, after getting vaccinated, or both? And what could long-lasting immunity mean for booster shots?
It's still too early to tell -- but experts are getting closer to cracking the code.More Related News