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ISIn a statement, the National Eve Agencyncia Sanitary (Anvisa) reported that it had decided to stop the clinical trial of the vaccine Coronavac “after the occurrence of a serious adverse event”, on 29 October.
A Anvisa did not provide further information on the incident, simply stating that the category of “adverse event” may include death, potentially fatal side effects, persistent or significant disability or disability, hospitalization or other “clinically significant event”.
“With the interruption of the study, no new volunteers will be able to be vaccinated”, said the agency, adding that “it will evaluate the data observed so far and will judge the risk / benefit of the continuity” of the tests.
The suspension of clinical trials of Coronavac, which involves nine thousand volunteers, came the day after American pharmaceutical giant Pfizer announced its vaccine against covid-19 achieved a test efficiency of 90%.
Pfizer candidate vaccines e Sinovac 3 trials are in phase, the last phase before receiving regulatory approval.
Both are being tested in Brazil, the second ever affected through the pandemic, with over 162,000 deaths.
A Coronavac, which is also being tested in China, Turkey, Bangladesh and Indonesia, has been object of a political battle in Brazil between one of his biggest supporters, the governor of Sao Paulo, João Doriaand its main political opponent, the president Jair Bolsonaro, which am October its purchase is prohibited.
The head of state referred to the vaccine of Sinovac as coming from “that other country” and instead promoted the vaccine developed by the University of Oxford with the pharmaceutical company britanica AstraZeneca.
The government of São Paulo has joined forces Sinovac coordinate the last phase of clinical trials in Brazil and sign a contract that provided for the acquisition and distribution of 46 million doses of the vaccine.
Bolsonaro, which shows skeptical in relation to the severity of pandemic and declares himself anti-communist, also decided against vaccination covid-19, which has already caused almost 156 thousand deaths and more than 5.3 million infected in Brazil it will not be mandatory.
The whole situation has generated a strong controversy in the country and has transformed the distribution of the future vaccine into a highly politicized battle among the so-called “Bolsonarism“and the opposition, both conservative and left.
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