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Pfizer claims its Covid-19 vaccine is effective against Delta variant

RIO DE JANEIRO, BRAZIL - Pfizer-BioNTech's vaccine is highly effective against the Delta coronavirus variant, an Israeli Pfizer official said Thursday. First identified in India, the Delta is becoming the dominant coronavirus variant worldwide, according to the World Health Organization (W.H.O.).

"The data we have today, built up from the research we are conducting in the laboratory and including data from these locations where the Delta Indian variant is . . .

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