New research suggests some vaccines could provide years of protection against COVID-19. A study out of St. Louis shows people who received two doses of the Pfizer or Moderna vaccine likely won’t need a booster shot unless the virus mutates or becomes vaccine-resistant. Boosters may be needed for older adults or people with weakened immune systems.
Pfizer, Moderna vaccines may offer protection for years. See story here. https://wgntv.com/news/coronavirus/pfizer-moderna-vaccines-may-offer-protection-for-years/