China Vaccine Claims Belied; Efficacy In Brazil Only 50.3%

The Chinese Sinovac vaccine has been found to be far less effective than vaccines developed by Pfizer-BioNTech and Moderna, according to a Brazil government statement on Tuesday, which raised questions about the lack of transparency of Chinese-made vaccines.

The efficacy of the Chinese-made vaccine was 50.38 per cent in Brazil’s late-stage trials.

While the number exceeds the threshold required for regulatory approval, it falls far below the 78 per cent previously announced, raising questions as to the veracity of the data and fueling skepticism over the apparent lack of transparency regarding Chinese vaccines, CNN reported.

The Butantan Institute, which has been conducting the trials in Brazil, announced that the vaccine had a 78 per cent efficacy against mild to serve COVID-19 cases.

“The Butantan Institute and the Government of Sao Paulo reported that the coronavirus vaccine achieved a 50.38 per cent overall efficacy rate in the clinical study conducted in Brazil, in addition to (an efficacy rate of) 78 per cent for mild cases and 100 per cent for moderate and severe cases of Covid-19. All rates are higher than the 50 per cent level required by the WHO (World Health Organization),” according to a statement published by the government of Sao Paulo.

The Sinovac vaccine is also less effective than its domestic Chinese competitor, developed by the state-owned Sinopharm, which it says is 79.34 per cent effective, CNN reported.

“Regarding the overall efficacy of the analysis, we met the requirements of the WHO with 50.38 per cent,” CNN quoted Ricardo Palacios, medical director for clinical research at the Butantan biomedical center in Sao Paulo as saying.

Yanzhong Huang, a senior fellow for global health at the US-based Council on Foreign Relations, described the 50.38 per cent efficacy of the Sinovac vaccine as a “disappointing” result.

Russia’s Sputnik V vaccine is 91 per cent effective, while the United Kingdom’s vaccine, developed by Oxford University and AstraZeneca, has an average efficacy of 70 per cent.

According to CNN, the Chinese Sinovac vaccine has signed deals to provide 46 million doses of its Covid-19 vaccine to Brazil. (ANI)

0 0 votes
Article Rating
Notify of
Inline Feedbacks
View all comments

We use cookies to give you the best online experience. By agreeing you accept the use of cookies in accordance with our cookie policy.

Privacy Settings saved!
Privacy Settings

When you visit any web site, it may store or retrieve information on your browser, mostly in the form of cookies. Control your personal Cookie Services here.

These cookies are essential in order to enable you to move around the website and use its features. Without these cookies basic services cannot be provided.

Cookie generated by applications based on the PHP language. This is a general purpose identifier used to maintain user session variables. It is normally a random generated number, how it is used can be specific to the site, but a good example is maintaining a logged-in status for a user between pages.

Used on sites built with Wordpress. Tests whether or not the browser has cookies enabled
  • wordpress_test_cookie

In order to use this website we use the following technically required cookies
  • wordpress_test_cookie
  • wordpress_logged_in_
  • wordpress_sec

Decline all Services
Accept all Services
Would love your thoughts, please comment.x