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Examine me
The absence of the presentation of the efficacy data of the Coronavac vaccine this Wednesday 23, during a press conference held at the Butantã Institute, left the scientific community concerned about the effectiveness of the immunizer. The São Paulo government had already postponed the presentation of the data, initially scheduled for the 15th. Now, the disclosure has been postponed again. The announcement of the new test result is scheduled for two weeks from now.
“The problem is that the lack of a more consistent explanation for why so many postponements is beginning to make scientists suspect that there may be a problem with the vaccine,” says Maria Amélia Veras, epidemiologist at the Santa Casa School of Medicine. of Medicine. São Paulo and the Covid-19 BR Observatory.
According to the Butantã Institute, the data was not presented because there would be differences with the results of clinical trials in countries such as Turkey and Indonesia, where evaluations are also being carried out.
Brazilian scientists who have been following the evolution of the vaccine say that few volunteers received the immunization dose in Turkey and Indonesia, which would not justify a problem of divergence in tests. “Most of the tests were carried out in Brazil,” says Fernando Reinach, a biologist with a doctorate in cellular and molecular biology from Cornell University and author of the book “The arrival of the new coronavirus in Brazil.” (…)
There is a suspicion that the results may not have been conclusive or that the vaccine would have a low efficacy, since the Butantã Institute has not yet published data on the efficiency index of the immunizer. “The entire scientific community was waiting for the results to be released on Wednesday, as Butantã had announced, and we were surprised by the cancellation of the opening of the analyzes,” says Veras. (…)
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