Covid-19 Vaccination Could Be Periodic, Says Director of Brazil´s Butantan Institute

There is still a debate over the interval between the two CoronaVac doses. In the state immunization schedule submitted by the São Paulo government, it will be 21 days between one shot and the other. However, during the last press conference, an interval of between 15 and 28 days was speculated.

RIO DE JANEIRO, BRAZIL - The Butantan Institute director Doctor Dimas Covas said that vaccination against the novel coronavirus could become periodic. The assessment does not only refer to the CoronaVac, which the institute produces.

"I do not know if annual, but periodic vaccination will be required, should the virus remain," said the researcher of the Brazilian Institute which will produce the CoronaVac in partnership with Chinese Sinovac. The interval and amount of doses of the CoronaVac are still under study.

According to the doctor, who was interviewed on Saturday in an education network, the novel coronavirus (Sars-CoV-2) should . . .

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