How Russia’s invasion of Ukraine could cause a COVID-19 spike in Europe

Oladele A. Ogunseitan, PhD, a professor of population health and disease prevention at the University of California, Irvine [said] “The war situation and population migration will make the emergence of new variants more likely, and that is a threat to global health, particularly if the existing vaccines are not effective against new strains or vaccinated people require a fourth booster vaccine to remain protected,” Ogunseitan added.