Vaccines Provide Short-Term Protection Against COVID-19; Booster Injections Required: Study

Vaccination against SARS-CoV-2 virus provides only temporary protection, and reliable protection against reinfection necessitates regular booster shots with vaccines that have been modified to address changes in the virus that occur as part of its natural evolution over time, according to study. It is published in journal "Proceedings of the National Academy of Sciences." Study examines variations in covid immunity following vaccinations and spontaneous infection based on declining antibody levels.