Chloroquine and onchocerciasis.

My original elective proposal was to study the prevalence and nature of onchocerciasis or 'river blindness' along the Canandé River in Esmeraldas province of Ecuador (Cooper, 1986). However, unknown to me, this study was completed and published before I arrived (Guderian et al, 1987). Fortunately, on arrival I was able to join the same group on a study of the efficacy of chloroquine in the control of onchocerciasis.