Brazil Could Have Covid-19 Vaccine for Priority Groups in First Quarter of 2021

Ricardo Palacios, head of Clinical Research at the Butantan Institute, says he does not believe in the "herd immunity" principle for the new coronavirus.

RIO DE JANEIRO, BRAZIL - Ricardo Palacios, Medical Director of Clinical Research at the Butantan Institute, had never seen so much interest in his and his fellow scientists' work as that which has taken over his conversations with family and friends since the novel coronavirus pandemic swept . . .

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