Chinese coronavirus vaccine shows 50% efficacy in Brazil

In a trial with 12,500 volunteers in Brazil, CoronaVac is not shown to produce any adverse effects or significant allergic reactions. – EPA pic, January 13, 2021.

THE Chinese-developed CoronaVac Covid-19 vaccine has demonstrated a 50% efficacy following tests in Brazil, the organisation in charge of its production in the South American country said on Tuesday.

CoronaVac has been given to frontline health care workers in close contact with coronavirus patients.

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