A new study on veterans in the US shows a dramatic decrease in effectiveness of three of the covid-19 vaccines over time. The effectiveness of the vaccines were measured in March and again at the end of September.
From March to the end of September, the vaccines declined in effectiveness.
Moderna 89% to 58%
Pfizer 87% to 45%
Johnson and Johnson 86% to 13%
The Astra is no better either.
Our esteemed leader despite not being the age to qualify made sure he got the Pfizer while telling the rest of us how wonderful the Astra was.
The recommendation from the JCVI (Joint Committee on Vaccination and Immunisation) comes amid concern about waning immunity.
There are some signs protection offered by the vaccine may start dropping off several months after the second dose - with the most vulnerable groups most at risk of this.
Most, but not all vaccines are the same, or we would not have our annual flu shot around this time of year. C-19 will be the same so we can look forward to annual C-19 boosters too … Thanks China!!
I think flu vaccines are a little different. Every year, the flu vaccine targets different viruses. That’s the reason that it’s not always effective. They’re not always accurately predicting the right viruses.
This article says that in the next 10 or 20 years, there might be a universal flu shot that targets all viruses that won’t need to be taken every year.
It’s the same with C-19 in that with each new person infected, there is always the risk of mutation and existing vaccines might not be effective, so new ‘shots’ will be required as and when produced.