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A clinical trial in Liberia to test the antiviral drug brincidofovir has been halted due to problems finding patients. Since the trial started on 2 January, fewer than 10 patients have been treated due to a decline in the number of new cases. The falling numbers of patients is obviously a good thing and the developer of the drug, Chimerix, decided to halt the trial after consultation with investigators at the University of Oxford, the Food and Drug Administration and Doctors without Borders.