The practice of variolation among the Songhai of Mali.
D000328:Adult; D001741:Black or African American; D044383:Black People; D002648:Child; D004196:Disease Outbreaks; D005260:Female; D006801:Humans; D007114:Immunization; D008297:Male; D008302:Mali; D008519:Medicine, Traditional; D012899:Smallpox / Q000453:epidemiology / Q000517:prevention & control*; D013483:Superstitions