Will we need new vaccines against new COVID-19 variants?
Are vaccines less effective against the Delta variant? Does it spread faster and cause more severe illness? Will we need new vaccines soon?
Immunologist Dr. Satyajit Rath talks about the Delta variant of COVID-19 and what challenges it poses to the immunity offered by vaccinations. Are vaccines less effective against the Delta variant? Does it spread faster and cause more severe illness? Will we need new vaccines soon?
