UK Covid app confirms vaccines are waning

Alpha, Astrazeneca, B.1.1.7, B.1.617.2, Coronavirus, Delta, England, Europe, Infection, Northern Ireland, Pfizer/Biontech, Reinfection, Scotland, Transmission, UK, Vaccine, Vaccine Breakthrough, Vaccine Waning, Variants, Wales

Joinzoe: “We found that initial protection against infection a month after the second dose of the Pfizer vaccine was 88%, while after five to six months this fell to 74%.  For the AstraZeneca vaccine, there was around 77% protection a month after the second dose, falling to 67% after four to five months.

This analysis included:

  • 411,642 test results from users who were doubly vaccinated with the Pfizer mRNA vaccine at the time of the infection 
  • 709,486 test results from users who were doubly vaccinated with the AstraZeneca vaccine
  • 76,051 test results from users who were not yet vaccinated at the time of the infection

We found that initial protection against infection a month after the second dose of the Pfizer vaccine was 88%, while after five to six months this fell to 74%.”

Professor Tim Spector, lead scientist at the ZOE COVID Study, says:

“A reasonable worst-case scenario could see protection below 50 percent for the elderly and healthcare workers by winter. With high levels of infection in the UK, driven by loosened social restrictions and a highly transmissible variant, this scenario could mean increased hospitalisations and deaths. 

Joinzoe Covid App: Is COVID vaccine protection fading?

 

UK: Vaccine breakthrough rate for Delta infections still increasing

 

 

Image by mdgrafik0 from Pixabay

** This post was originally published on August 25, 2021 **