Sinovac: Brazil's results show a Chinese 50.4% effective vaccine

. It shows that the vaccine is significantly less effective than suggested previous data, just over 50% necessary for regulatory approval.

The Chinese vaccine is one of the two that the Brazilian government has aligned.

Brazil has been one of the countries most affected by Covid-19.

Sinovac, a Biopharmaceutical company based on Beijing, is behind Coronavac, an inactivated vaccine. It works through the use of dead viral particles to expose the body's immune system to the virus without risking a serious response of diseases.

Several countries, including Indonesia, Turkey and Singapore, have placed orders for the vaccine. .css-1pzprxn-bulletlistcontainemain-left: 1.5REM; .css-1pzprxn-bulletlistcontainer

  • How can I know that the Vaccine Covid is safe?

    Researchers last week at the Bizan Institute, which has been the realization of the trials in Brazil, announced that the vaccine had an effectiveness of 78% against the cases of Covid-19 "soft to severe" .

    But on Tuesday revealed that calculations for this figure did not include data from a group of "very soft infections" among those who received the vaccine that did not require clinical assistance.

    With the inclusion of these data, the effectiveness rate is now 50.4%, the researchers said.

    But Butanta emphasized that the vaccine is 78% effective to prevent mild cases that need treatment and 100% effective to avoid moderate to severe cases.

    Last month, Turkish researchers said the Sinovac vaccine was 91.25% effective, while Indonesia, which implemented its massive vaccination program on Wednesday. , he said it was 65.3% cash. Both were provisional results of the late stage trials. Can vaccines be compared?

    By Philippa Roxby, BBC Health Reporter

    The latest figures for China's Coronavirus vaccine, show how difficult to compare vaccines.

    In the face, the figure of 50% efficiency is not as good as 70% or Pfizer and 95% Oxford. But the trials are executed very differently in different countries, the number of enrolled volunteers varies wildly, as well as the criteria used to test the amount of protection offered by vaccines.

    A figure of efficacy is reached by the number of people Covid were developed after receiving the vaccine, compared to how many were affected when they were given a simulated injection. Normally, it is based on people who develop obvious symptoms, but in this Brazilian essay, people without symptoms also seem to have been included.

    Therefore, it is only when the complete data of all the tests of this vaccine are published. Scientists can analyze their true efficiency and compare as. There is only limited data for this Sinovac vaccine that is currently available, and experts say the image is confused.

    In the long term, many vaccines against Covid are needed to vaccinate the world and, inevitably, some will perform better than others, but give as many people as possible, a priority.

    There has been concern and criticism that the Chinese vaccine essays are not subject to the same scrutiny and levels of transparency than their western counterparts.

    The SINOVAC vaccine and vaccine developed by the University of Oxford and the AstraZeneca pharmaceutical firm have requests for authorization for pending emergency use with regulators in Brazil. The latest news comes, since Brazil is dealing with a major increase in cases. The country currently has the third highest number of Covid-19 cases in the world by more than 8.1 million, just behind the US. UU and India.

    The editor of the Americas of the World Service of the BBC Candace Piette says that the country is suffering one of the most deadly outbreaks in the world, but they have not yet announced when their vaccination program will begin.

    The government has been caused largely by the government and #

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