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Coronavirus: researchers in Canada urge delay in administering Pfizer vaccine’s second dose

Two Canada-based researchers on Wednesday urged governments to delay administering the second dose of Pfizer’s Covid-19 vaccine, which they said had an efficacy of 92.6 per cent after the first dose, as it was not significantly beneficial in the short term.Danuta Skowronski and Gaston De Serres said their findings were derived from Pfizer’s documents submitted to the US Food and Drug Administration (FDA).These findings were also similar to the first-dose efficacy of 92.1 per cent reported for…

Read the original article at South China Morning Post

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