Coronavirus: Vaccinating the world's most populous nations

As Brazil's Covid-19 crisis continues, a leading health institute says the country is experiencing a historic collapse of its medical services.

Meanwhile in India, cases are on the rise again with some criticism about the export of vaccines while many Indians still wait for one. We take a closer look at both nations hearing from our correspondents and people living in these countries.

And we continue to hear the conversation between four journalists from around the world who have been covering Covid-19, as we mark one year since the WHO declared the global pandemic.

Picture: A health worker prepares to administer the second dose of Sinovac"s CoronaVac coronavirus disease (COVID-19) vaccine to an elderly citizen, at Tatuquara neighborhood in Curitiba, Brazil March 5, 2021.
Credit: REUTERS/Rodolfo Buhrer