COVID vaccine effects wane over time but still prevent death and severe illness
Two-thirds of people report experiencing social isolation and loneliness during pandemic
15 September 2021WHO says Africa will get 30% of COVID vaccines it needs by February
15 September 2021COVID vaccine effects wane over time but still prevent death and severe illness
Several countries—including the UK—are now offering third COVID-19 shots amid reports of vaccines proving less effective over time. But do these countries really need to embark on widespread booster campaigns? Here’s what research tells us so far about how vaccines are performing.
