title: Why don't we have a schistosomiasis vaccine?
abstract: Over the past 30 years there has been a concerted effort to understand host immune responses to schistosomes, with the ultimate aim of producing a vaccine for human use. In this issue, Bergquist and Colley, in summarizing recent meetings in Cairo, provide a detailed appraisal of progress towards that goal. It seems an appropriate time to ask why, with reference to Schistosoma mansoni, the development of a vaccine has proved so difficult. This question is explored here by Alan Wilson and Pat Coulson.
authors.forename: R A
authors.initials: RA
authors.lastname: Wilson
authors.forename: P S
authors.initials: PS
authors.lastname: Coulson