Testing of the malaria drug hydroxychloroquine as a possible treatment for coronavirus has been halted because of safety fears, the World Health Organization (WHO) says. According medical journal The Lancet, there were no benefits to treating coronavirus patients with hydroxychloroquine, and that taking it might even increase the number of deaths among those in hospital with the disease. Hydroxychloroquine is safe for malaria, and conditions like lupus or arthritis, but no clinical trials have recommended its use for treating Covid-19.