Pfizer, Moderna Covid-19 Vaccines Highly Effective After Fir
Now open: Certificate Course in Management of Covid-19 by Govt. Of Gujarat and PlexusMDKnow more...Now open: Certificate Course in Management of Covid-19 by Govt. Of Gujarat and PlexusMDKnow more...
Get authentic, real-time news that helps you fight COVID-19 better.
Install PlexusMD App for doctors. It's free.
Covid-19 vaccines developed by Pfizer Inc with BioNTech SE and Moderna Inc reduced the risk of infection by 80% two weeks or more after the first of two shots, according to data from a real-world US study. The risk of infection fell 90% by two weeks after the second shot, the study of just under 4,000 vaccinated US healthcare personnel and first responders found.

The study by the US Centers for Disease Control and Prevention (CDC) evaluated the vaccines' ability to protect against infection, including infections that did not cause symptoms. Previous clinical trials by the companies evaluated their vaccine's efficacy in preventing illness from Covid-19.

The findings from of the real-world use of these messenger RNA (mRNA) vaccines confirm the efficacy demonstrated in the large controlled clinical trials conducted before they received emergency use authorizations from the U.S. Food and Drug Administration. The study looked at the effectiveness of the mRNA vaccines among 3,950 participants in six states over a 13-week period from Dec. 14, 2020 to March 13, 2021.

The new mRNA technology is a synthetic form of a natural chemical messenger being used to instruct cells to make proteins that mirror part of the novel coronavirus. That teaches the immune system to recognize and attack the actual virus.

Some countries, including Britain and Canada, are allowing extended gaps between doses that differ from how the vaccines were tested in clinical trials in order to alleviate supply constraints. In the trials, there was a three-week gap between Pfizer shots and four weeks for the Moderna vaccine.

Study:
https://www.cdc.gov/media/releases/2021/p0329-COVID-19-Vaccines.html
Dr. T●●●●z H●●●●●●i and 2 other likes this4 shares
Like
Comment
Share