Covid boosters: Who needs them and how do they help?
By Bernd Debusmann JrBBC News, Washington
A panel advising the US Food and Drug Administration (FDA) is meeting to debate the need for additional doses of the Modern and Johnson & Johnson vaccines.
The meetings on Thursday and Friday come one month after the FDA authorised Pfizer booster jabs for some Americans, including those over 65 or at higher risk of severe illness and who work in frontline jobs.
Prior to the FDA's decision, an advisory panel at the C...