A recent study in South Korea has failed to definitively prove that an anti-malaria drug seen as a candidate in treating the novel coronavirus would be effective against the global pandemic, local media reported on Wednesday.

In their fight against COVID-19, many countries, including the U.S., rushed to approve the use of hydroxychloroquine (HCQ) to treat coronavirus victims.

The study by researchers at the Samsung Medical Center in Seoul and Pusan National University Hospital in Busan was “not able to confirm the effectiveness” of the drug, according to the Yonhap news agency.

Though all test subjects recovered from the

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