Sinovac shot controlled Covid in Brazil town after 75% covered

The vaccine developed by Sinovac Biotech Ltd. was effective in controlling Covid-19 in a mass-inoculation study in a small Brazilian town after 75% of adults were covered with a second shot.

The study carried out by the Sao Paulo state government in the small town of Serrana -- population 45,000 -- may offer clues for other developing nations on how much of the public needs to be vaccinated in order to begin moving past the pandemic that continues to wreak havoc in Latin America and beyond. The full results will be released during a press conference later on Monday with initial data broadcast on Sunday evening during TV Globo’s "Fantastico” program which interviewed researchers leading the project. While infection rates improved after first doses were administered, Covid-19 wasn’t properly controlled in the town until after a second shot was given, the researchers said.