SARS-CoV-2 Omicron symptomatic infections in previously infected or vaccinated South African healthcare workers

Marta Nunes; Sthembile Sibanda; Vicky Baillie; Gaurav Kwatra; Ricardo Aguas; Shabir Madhi.
Preprint en Inglés | PREPRINT-MEDRXIV | ID: ppmedrxiv-22270480