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Al-Marsad Journal: Researchers Danuta Skoronsky and Gaston de Serres called on governments to postpone vaccination with the second dose of Pfizer vaccine against Covid-19 disease, which they say has an effective rate of 92.6% after the first dose.
In a letter published in the New England Journal of Medicine, the researchers said they came to this conclusion based on documents provided by Pfizer to the United States Food and Drug Administration.
They indicated that these results are similar to those related to the vaccine, which is produced by Moderna, and that its effectiveness rate after the first dose was 92.1%.
He warned that there could be uncertainty about the duration of protection, which is guaranteed by one dose, but vaccination with the second dose a month after the first “brings no short-term benefit”.
And they added: “Given the current vaccine shortage, postponing the second dose is a matter of national security, if ignored it will certainly lead to thousands of hospitalizations and deaths from Covid-19. this winter in the United States. “
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