HEALTHCARESecond Dose of Covid Booster for Most Vulnerable Could Bring Benefits, WHO SaysNileshMay 18, 2022May 18, 2022 by NileshMay 18, 2022May 18, 20220742 As omicron and its sub-variants continue to spread globally, there may be some benefit to delivering a second dose of a coronavirus booster vaccine to...