Pfizer COVID Vaccine Second Dose May Be OK to Delay as First Dose is Highly Protective
- 3 years ago
Second dose of Pfizer Inc’s Coronavirus (COVID-19) vaccine could be delayed in order to cover all priority groups as the first one is highly protective, two Canada-based researchers said in a letter published in the New England Journal of Medicine.
The vaccine had an efficacy of 92.6% after the first dose, Danuta Skowronski and Gaston De Serres said, based on an analysis of the documents submitted by the drugmaker to the U.S. Food and Drug Administration (FDA).
These findings were similar to the first-dose efficacy of 92.1% reported for Moderna Inc's mRNA-1273 vaccine, according to the letter here on Wednesday.
In its response, Pfizer said alternative dosing regimens of the vaccine had not been evaluated yet and that the decision resided with the health authorities.
This article was originally published by Reuters on February 18, 2021:
http://reut.rs/3k7LuF9
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The vaccine had an efficacy of 92.6% after the first dose, Danuta Skowronski and Gaston De Serres said, based on an analysis of the documents submitted by the drugmaker to the U.S. Food and Drug Administration (FDA).
These findings were similar to the first-dose efficacy of 92.1% reported for Moderna Inc's mRNA-1273 vaccine, according to the letter here on Wednesday.
In its response, Pfizer said alternative dosing regimens of the vaccine had not been evaluated yet and that the decision resided with the health authorities.
This article was originally published by Reuters on February 18, 2021:
http://reut.rs/3k7LuF9
FIND the model and photographer created this video on Pexels:
https://bit.ly/3aqnKYj
SUBSCRIBE to our channel:
http://bit.ly/3pOwYUZ