'I don't know if there is a need for a fourth booster; that is something that needs to be tested'

Pfizer Chief Executive Officer Albert Bourla said on Monday he was unsure regarding the need for a fourth dose of the Covid vaccine.

The comments come as Moderna CEO Stephen Bancel said last week that people would need another shot in the fall of 2022, as the efficacy of boosters was likely to decline.

The spike of Covid cases due to the widespread omicron variant forced some nations to consider a second booster dose; however, early signs suggest repeat vaccination may be a hard sell, Reuters reported. ... Read More: i24