Health officials across the world are issuing warnings over the use of antimalarial drugs after President Trump’s comments about treating the coronavirus with them sparked panic-buying and overdoses.

In recent days, thousands of consumers across Africa and South Asia rushed to stockpile chloroquine and hydroxychloroquine, drugs that are usually used to combat malaria, vacuuming up supplies in cities in the developing world, sending prices skyrocketing and prompting panicked warnings from local authorities.

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