With coronavirus vaccines being administered worldwide, scientists are preparing a new weapon against the disease that has claimed more than 4.5m lives: an effective antiviral medication to treat the worst symptoms.
While vaccines aim to prevent infection, a pill that sped up recovery times and could be taken at home would be a significant development, providing treatment for people who are infected and potentially reducing the burden on hospitals.
With autumn under way in the northern hemisphere and fears of rising cases in colder months, pharmaceutical companies are locked in a race to achieve a breakthrough.
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