Originally posted on Quora
New Booster is 30% Effective
Risk of reinfection increases with the number of doses/boosters received; those who get more shots have a higher risk of contracting covid again than those who get fewer shots and this isn’t the only study to find such results.
This is not the only study to find a possible association with more prior vaccine doses and higher risk of COVID-19. A large study found that those who had an Omicron variant infection after previously receiving three doses of vaccine had a higher risk of reinfection than those who had an Omicron variant infection after previously receiving two doses of vaccine [21]. Another study found that receipt of two or three doses of a mRNA vaccine following prior COVID-19 was associated with a higher risk of reinfection than receipt of a single dose.
Since a large proportion of the population has already been exposed to omicron (myself included without symptoms) a substantial proportion of individuals will have very minimal benefits from the new booster.
89% of the bivalent boosters in this study came from Pfizer who controls 70% of the vaxx market in Europe and North America and who tested it on 8 mice for higher profit margins……… I mean super effectiveness obviously.
Source: Effectiveness of the Coronavirus Disease 2019 Bivalent Vaccine