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Roche’s Covid Pill Tests Delayed by Shortage of Sick Britons

Visitors receive a dose of the Covid-19 vaccine in London.

Visitors receive a dose of the Covid-19 vaccine in London.

Photographer: Hollie Adams/Bloomberg

Roche Holding AG has run into a speed bump as it seeks to rush a pill for Covid-19 to the market: The U.K.’s aggressive vaccine drive has made it harder to find sick people to test it on.

A trial of the pill for people with mild or moderate Covid begun in the U.K. earlier this year is delayed, Roche said. To speed things up, the Swiss pharma giant has started recruiting patients in a range of other places, from Texas to Bulgaria, Canada and Spain, the U.S. clinical trials registry shows.