RIO DE JANEIRO, BRAZIL - Developed by Chinese researchers, a new Covid-19 vaccine project has yielded promising results reported in a study published in the prestigious The Lancet scientific journal. The vaccine was tested on 108 people, split into three groups, and produced a "significant" increase of antibodies against the novel coronavirus, according to the researchers.

The study is signed by 21 Chinese researchers and provides data on both safety and improved immunity against Covid-19, based on human patient testing. Most patients reported no severe reaction.

The number of antibodies against the novel coronavirus increased in the body of . . .

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