Scientists have called for: Delay Second Dose of Pfizer Vaccine – Medications

Two Canadian scientists have asked governments to delay the second dose of the Pfizer vaccine because protection after the first injection is 92.6 percent, Reuters reported.

Danuta Skowronski and Gaston de Serres explain that they reached this conclusion by analyzing Pfizer documents submitted to the Food and Drug Administration.

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The results are similar to the declared efficacy of 92.1 percent for Moderna’s RNA vaccine.

Skovronsky and Serres’s letter was published in the New England Journal of Medicine.

They caution that there may be uncertainty about how long protection lasts from a single dose, but the second injection, a month after the first, provides “little short-term benefit.”

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“Given the vaccine shortage, postponing the second dose is a national security issue that, if ignored, will lead to thousands of Kovid-19 hospitalizations and deaths in the winter in the United States,” the authors warn.

Pfizer said a change in the dose of its vaccine has not yet been evaluated and that health authorities can make that decision. Pfizer recommends close monitoring of reprogramming so that the vaccine provides the maximum protection possible.

In Britain, authorities said there was evidence to support their decision to increase the period between the two doses of the Pfizer vaccine to 12 weeks. Pfizer and its partner Biontech have cautioned that they have no evidence to back it up.

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The US health authorities and the European Medicines Agency maintained the recommendation for the test interval. The European Medicines Agency has indicated a maximum interval of 42 days between the first and second injections, while the US Food and Drug Administration has left an interval of 21 days, as recommended by the manufacturer, it adds BTA.