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Third Pfizer dose increases level of antibodies against Delta strain by 11 times

Source : 112 Ukraine

According to the Pfizer Company, the level of antibodies after the third dose is significantly higher than after the second dose
19:54, 28 July 2021

American biotech company Pfizer
Sky News

Pfizer Company stated that the third dose of its vaccine against Covid-19 increases the level of antibodies against Delta strain by 11 times as CNN reported.

It is noted that the issue is about people at the age of 65-85, who have already received the third dose of the vaccine.

Meanwhile, people aged from 18 to 55 who had the third dose have five times higher level of antibodies against Delta strain than after the second dose.

Related: Ukraine to receive 47 mln doses of various Covid-19 vaccines by the end of 2021, - PM

Besides, according to Pfizer, the level of antibodies after the third dose is notably higher than after the second dose against the original variant of coronavirus and Beta variant that was found in South Africa.

As we reported, the covid vaccines from Pfizer/BioNTech and AstraZeneca are highly efficient against the Delta strain. Two doses of Pfizer vaccine appeared to be 88% effective against the infection caused by the Delta strain. The full course of vaccination with the AstraZeneca drug showed 67% efficiency. Two doses of Pfizer and AstraZeneca are considered almost just as much effective against the Alpha strain. The difference in the efficiency levels was minimal.

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