World Health Organization (WHO) advisors today allowed the hydroxychloroquine arm of a large multi-country treatment trial to resume, following a temporary pause to allow after its safety monitoring group to review the data.As the global total approached 6.5 million cases, the agency said it is worried about accelerating epidemics, especially in Central and South America.The global total today climbed to 6,445,457, and at least 382,451 people have died from their infections, according to the Johns Hopkins online dashboard.WHO review found no safety alarmsAfter a recent observational study in The Lancet reported that COVID-19 patients treated with hydroxychloroquine and chloroquine had a higher risk of death and serious heart rhythm