Praziquantel--quality, dosages and markers of resistance.

The fourth and last meeting of Concerted Action on Praziquantel (PZQ), sponsored by the European Commission, was held in Rome, Italy from 31 March to 1 April, 2001. Highlights of the meeting were new findings on the quality of generic drugs, an initiative to promote the Africa-wide distribution of PZQ and new results in the search for markers of PZQ-resistant schistosomes.