THOR, THE Norse thunder-god, was reputed to carry a hammer known as Mjollnir—a tool for destroying enemies and blessing friends. The hammer has provided suitable inspiration for the name of a powerful new drug to fight covid-19: molnupiravir. That drug has just been approved by Britain’s national medicines regulatory agency—the first in the world to do so. Molnupiravir, made by Merck, a big pharma firm, and a Florida-based biotech called Ridgeback Biotherapeutics, is the first oral antiviral medicine available to treat covid-19. The approval marks another milestone in the world’s fight against covid-19.
Other countries are also working quickly to approve the new medicine, which has
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