– Manuscript – Pfizer has sought government approval for a new combination COVID-19 vaccine that aims to protect against new virus versions. The American drug maker officially requested the approval on Monday. The combination vaccine seeks to target new mutations of the Omicron version, or variant, of COVID-19. The latest mutations, or “sub-variants,” have been … [Read more...] about Pfizer Seeks Approval of Latest Vaccine to Fight COVID-19 Variants