Despite experts raising doubts over the plasma therapy to treat Covid-19, the US Food and Drug Administration (FDA) has issued an emergency use authorisation (EUA) for convalescent plasma to treat the deadly respiratory disease.

In a statement on Sunday, the FDA said that "known and potential benefits of the product outweigh the known and potential risks of the product".

According to a CNN report, the FDA said more than 70,000 patients had been treated with convalescent plasma.