evidence: At a press conference on Wednesday, the WHO announced it would resume its global trial of hydroxychloroquine, after its data safety monitoring committee found there was no increased risk of death for Covid patients taking it. [...] On 22 May the Lancet published a blockbuster peer-reviewed study which found the antimalarial drug hydroxychloroquine, which has been promoted by Donald Trump, was associated with a higher mortality rate in Covid-19 patients and increased heart problems. Trump, much to the dismay of the scientific community, had publicly touted hydroxychloroquine as a "wonder drug" despite no evidence of its efficacy for treating Covid-19.