RIO DE JANEIRO, BRAZIL - The largest study ever conducted on hydroxychloroquine in Brazil showed that the drug is ineffective in treating the novel coronavirus.
The medication was administered for up to 15 days and, at the end of the period, neither its use alone nor when combined with azithromycin showed any benefit over the standard treatment for cases of the disease.
Chloroquine also failed to reduce the virus' mortality, and the number of deaths in 15 days for patients treated with chloroquine was similar to that of patients treated with other drugs.
Some 667 patients took part in the study . . .