
The entire adult population of about 30,000 people in the city of Serrana, Brazil, will be vaccinated against Covid-19 to test whether it lowers the infection rate.
Reporter: BBC South America correspondent Katy Watson
Camera: Renato Varoli
Editor: Colm O’Molloy
Producer: Jessica Cruz
Click Here to Visit Orignal Source of Article https://www.bbc.co.uk/news/health-56118963
