(VOVWORLD) -A fourth dose of the Pfizer/BioNTech vaccine lowered rates of COVID-19 among the elderly but the protection against infection appeared short-lived, Reuters quoted findings of a...
(VOVWORLD) -The setting up of checkpoints in COVID-19 lockdown areas is considered one of the effective ways to slow the spread of the SARS-CoV-2 virus in the community, and those...