3 ms·

Yes, but the response will be slower than if you still have a large amount of antibodies already there. How much difference does it make in practice is still b

• raducu 5y ago
  High antibody titers is one reason it's very unlikely to get reinfected within 3 months. But it's more complicated as there are multiple antibody types -- the actual infection produces antibodies in your nose that aren't produced when you get the vaccine, so those antibodies would protect even more. I read that there are ongoing studies to administer covid vaccines intranasally to protect even better (I miiight have just reas that they were actually using one of the mRNA vaccines in existence but just putting it in your nose) edit: I could not find the story about an existing mRNA vaccine being tested intranasally, but there are other vaccines in development that are given intranasally.
• red_trumpet 5y ago
  > and the uncertainty is the cause of the conflicting recommendations for or against boosters. Imo it's more relevant that the majority of the human race is not even vaccinated twice. We have to decide, where we can safe more lives. Boosting the immune response in western countries, or giving vaccine to the poorer parts of the world.
  • occamrazor 5y ago
    Indeed. Almost everybody agrees that boosters probably reduce symptomatic infection and community spread. The real questions are: 1. Effect size 2. Relative effectiveness compared to more vaccinations in third world countries.