PARIS, France (AFP) — The Chinese CoronaVac jab, a key tool in Brazil’s fight against Covid-19, is less effective against the Gamma variant first detected in the virus-ravaged South American country, a study said Friday. Researchers found that antibodies generated by the vaccine work less well against the variant than a previous coronavirus strain, while Gamma may also be able to reinfect people who had previously had the virus. Gamma’s capacity to evade these […]