title: Dengue hemorrhagic fever--Puerto Rico.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D003715:Dengue / Q000175:diagnosis / Q000453:epidemiology*; D004196:Disease Outbreaks; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D011647:Puerto Rico