What is the effect of increasing the interval between two doses of the "Pfizer" vaccine?

A British study, whose results were published today, revealed the effect of increasing the interval between two doses of the Pfizer anti-Corona vaccine on antibody levels.

According to the study, the longer interval between the two doses of the Covid-19 vaccine produced by Pfizer, leads to increased total levels of antibodies compared to the shorter gap.

This study may help guide vaccination strategies against the mutated strain "delta" that reduce the effectiveness of the first dose of the Covid-19 vaccine, although both doses are still protective.

For the longer interval between the two doses, the levels of inhibitory antibodies against the mutated delta strain were poorly induced after one dose and were not maintained during the period before the second dose.

"After two doses of the vaccine, the levels of inhibitory antibodies were twice as high after the longer interval compared to the shorter period between the two doses," they added.

It is believed that inhibitory antibodies play an important role in immunity to the Corona virus, but not as a whole, as T cells also play a role.

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