Decreased severity of disease during the first global omicron variant covid-19 outbreak in a large hospital in tshwane, south africa.
Int J Infect Dis. 2022 Mar;116:38-42. doi: 10.1016/j.ijid.2021.12.357. Epub 2021 Dec 28.
Int J Infect Dis. 2022.
PMID: 34971823
Free PMC article.