Sumary of Study links vaccine immune response to age:
- Antibodies are blood proteins that are made by the immune system to protect against infection.
- “Our older populations are potentially more susceptible to the variants even if they are vaccinated,” said senior author Fikadu Tafesse, Ph.
- Tafesse and colleagues emphasized that even though they measured diminished antibody response in older people, the vaccine still appeared to be effective enough to prevent infection and severe illness in most people of all ages.
- “The good news is that our vaccines are really strong,” Tafesse said.
- “The more people get vaccinated, the less the virus circulates,” Tafesse said.
- ” Researchers measured the immune response in the blood of 50 people two weeks after their second dose of the Pfizer vaccine against COVID-19. They grouped participants into age groups and then exposed their blood serum in test tubes to the original “wild-type” SARS-CoV-2 virus and the P.
- The youngest group — all in their 20s — had a nearly seven-fold increase in antibody response compared with the oldest group of people between 70 and 82 years of age.
- In fact, the laboratory results reflected a clear linear progression from youngest to oldest: The younger a participant, the more robust the antibody response.