A unique experiment ​is bringing hope to a small town in Brazil, one of the countries hardest hit by the COVID-19 pandemic. ​

While less than eight percent of the country as a whole has been vaccinated against the virus, the town of Serrana, in the countryside of Sao Paulo state, ​is almost fully vaccinated.  ​

The mass effort involves study of the CoronaVac vaccine, produced by China's Sinovac Biotech firm. 

CGTN's Paulo Cabral reports.

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