Covid19
COVID-19 Scan for May 05, 2022 | CIDRAP

Two doses of J&J, Pfizer vaccines effective against Omicron variant. A study of more than 160,000 COVID-19 tests of South African healthcare workers …
Two doses of J&J, Pfizer vaccines effective against Omicron variant. A study of more than 160,000 COVID-19 tests of South African healthcare workers …