As Guinea worm eradication programmes have got under way in endemic co
untries over the last decade, there has been a shift towards more part
icipatory methods. The approach to surveillance has changed from perio
dic cross-sectional surveys to monthly village-based reporting of case
s by a volunteer village health worker. At the same time, the emphasis
regarding control interventions has moved from the provision of safe
water supplies to health education. The new approach has proved very e
ffective. The village health volunteers who carry out both surveillanc
e and health education seem to be motivated largely by the social stat
us of their role; still more commitment will be required of them in th
e final stages of eradication. It is to be hoped that the networks of
village health workers established for Guinea worm eradication will fi
nd a useful role in health promotion after the worms have gone.