Post-infection immunity may wane faster after SARS-CoV-2 Omicron than after previous strains
University of Minnesota http://twin-cities.umn.edu/ 612-625-5000 Infection with the SARS-CoV-2 Omicron variant confers weak, short-term protection against reinfection, compared with the much more robust and durable protection provided by earlier variants, which highlights the need for periodic vaccine updates, a Cornell University Qatar–led study suggests. The researchers used a test-negative, case-control study design to compare the efficacy of SARS-CoV-2 Omicron infection against reinfection and poor
