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Covid-19 Vaccine Effective Against New Variant In Brazil

New research demonstrates that vaccination with CoronaVac, designed in China, is 50% effective at preventing COVID-19 within Manaus, Brazil.

The study includes a mixture of participants who had received either one or two doses of CoronaVac, which specifies a two-dose regimen for optimal efficacy. Further results are expected in the coming month that will include follow-up of participants who have since received their second dose.