Sinovac Real-World Data In Brazil Shed Fresh Light On China COVID Vaccine Efficacy Debate

15 Apr 2021

Sinovac’s COVID-19 vaccine has an efficacy rate of 50% in one hard-hit region of Brazil, a study finds, which could fuel fresh doubts over the efficacy of Chinese vaccines and raise the urgency to change current vaccination strategy.

china covid brazil — What does the Brazil variant have to say about China's global ambitions for its COVID vaccines? • Source: photo illustration - Shutterstock

A new real world studyreviewing the efficacy of the CoronaVac vaccine from Sinovac Biotech Ltd., a Beijing-based developer, could fuel fresh doubts about the effectiveness of Chinese COVID-19 vaccines.

The study, unveiled on 7 April by preprint website Medtrxiv.com and not peer-reviewed, focused on the region of Manaus, an...