One and Done – Not with Omicron!
Preprint data from South Africa suggests that natural immunity may not be as protective as with prior variants.
A preprint paper posted 01 Dec 2021 on MedRxiv has quickly analyzed routine surveillance data from South Africa with a focus on SARS-CoV-2 re-infections. While not yet peer-reviewed, this represents the most current available data concerning the ability of different viral strains (including Delta and Omicron) to re-infect previously infected patients, a…