Supply problems have again forced Moderna to delay some COVID-19 vaccine deliveries, a move that surprised Wall Street and contributed to a disappointing third quarter, AP...
Pfizer announced Saturday that tweaking its COVID-19 vaccine to better target the omicron variant is safe and works — just days before US regulators debate whether...
Moderna Inc (MRNA.O) said on Wednesday a new version of its coronavirus vaccine produced a better immune response against Omicron than the original shot, as the...
Moderna’s COVID-19 vaccine is up to four times more likely to cause inflammation of the heart muscle, a very rare side effect, than its rival vaccine...