A data-driven approach by a Brazilian state is reaping dividends, say Ngaire Woods and Leany Lemos.

OXFORD: One of COVID-19’s paradoxes has been the way in which some wealthy, high-capacity countries - particularly the United States and the United Kingdom - failed to contain the virus, while some poorer countries and regions with less capacity, including Vietnam, Greece, and the Indian state of Kerala swiftly brought it under control.