The US has supplied Brazil with 2 million doses of hydroxychloroquine for use against Covid-19, the two governments said on Sunday, despite medical warnings about risks associated with the anti-malaria drug.

The White House released a joint announcement on the drug, whose use has been touted both by US President Donald Trump and Brazilian President Jair Bolsonaro, just days after the World Health Organization suspended testing it in Covid-19 patients because of safety concerns.