Serrana, a city in the southeastern Brazilian state of Sao Paulo, has seen a 95 percent drop in Covid-19 deaths after it concluded vaccination of almost all adults, TV Globo reported on Sunday (May 30).

With 45,000 inhabitants, Serrana is a healthy oasis in Brazil, which has the world's second-deadliest outbreak with more than 461,000 deaths so far and a very slow immunisation pace due to the lack of vaccines.

Serrana was the...