Researchers on Thursday reported the first clinical evidence that drug-resistant mutations of the parasite responsible for malaria are gaining ground in Africa. Experts have long worried about the emergence of drug resistance across the continent, which accounted for more than 90 percent of malaria deaths worldwide in 2019. A new study published in The Lancet appears to confirm those fears. Researchers said there was an ‘urgent need’ for more monitoring in Rwanda, where the study was conducted, as well as in neighbouring countries.