As coronavirus spreads around the world, so too do the quack cures

Politicians, faith leaders and other authority figures have been touting dubious remedies

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In India, politicians from the ruling Hindu nationalist BJP party have been touting cow urine as a cure for Covid-19. In Tanzania the president has promised that taking communion in church would "burn" the virus away. In Brazil a congressman claimed a day of fasting would halt its spread.

And the leader of the most powerful country in the world, Donald Trump, has been touting as a miracle cure an unproven anti-malarial drug that has contributed to at least one death.