Topline Amid evidence of waning immunity and new Covid surges across Europe and Asia, a growing number of countries have started rolling out fourth doses of coronavirus vaccines—or are debating doing ...
Tag: waning immunity
What You Need To Know About How Well Vaccines Protect You Against Omicron
Topline The omicron coronavirus variant has spread rapidly around the world, with fully vaccinated people increasingly reporting Covid-19 infections and governments accelerating booster campaigns to c...