Thread by @DrEricDing

Interesting challenge study in Brazil—

A small town in Brazil is running a #COVID19 vaccine science study street by street aiming to track the real-world impact of a vaccine in halting transmission. They are testing SinoVac’s CoronaVac.🧵

HT @djknowles22

2) Serrana – a sleepy town in São Paulo state home to some 45,000 people – was chosen last autumn to host ‘Project S’, an unprecedented study that aims to answer looming questions about the real-world impacts of coronavirus jabs.

3) By vaccinating the entire city in stages researchers hope to track whether someone who is inoculated can still transmit the virus, and how quickly vaccines contain the pandemic.

4) “We expect vaccines to make the disease manageable, an infection that we can live with,” said Dr Ricardo Palacios, of Butantan Institute, which leads the research. “But we need to test this in the real world to identify whether vaccines reduce severe disease and transmission.

5) That’s our aim: to study this in a manageable, controlled setting and provide the data needed to make future public health decisions – like when is a good time to stop social distancing or face masks, based on vaccination rates?”


telegraph.co.uk/global-health/…