Pfizer shot the sharpest in Covid-19 immune response study

It found recipients of Sinopharm, Sputnik V and AstraZeneca jabs could be susceptible to breakthrough cases

15 November 2021 - 19:43 By Jason Gale

Pfizer-BioNTech’s Covid-19 shot yielded the strongest immune response among four vaccines tested in a study, which found people getting Sinopharm’s inoculation may be particularly susceptible to a breakthrough coronavirus infection.

Levels of protective antibodies to the part of the coronavirus that SARS-CoV-2 uses to infect human cells varied widely across each of the four vaccine groups. “Relatively low” antibody concentrations were stimulated by the Sinopharm and Sputnik V vaccines, intermediate levels for the AstraZeneca vaccine and the highest values for the Pfizer-BioNTech vaccine, a study in the journal Cell Host and Microbe showed. ..

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