title: The significance of infra-specific variations of hosts and parasites in the epidemiology of helminths of medical importance.
mesh_terms: D000349:Africa; D000818:Animals; D001188:Artiodactyla; D004446:Echinococcus; D004463:Ecology; D005368:Filariasis / Q000453:epidemiology; D005370:Filarioidea; D006373:Helminthiasis / Q000453:epidemiology*; D006376:Helminths / Q000302:isolation & purification / Q000472:pathogenicity; D006801:Humans; D012377:Rodentia; D012547:Schistosoma; D012548:Schistosoma haematobium; D012552:Schistosomiasis / Q000453:epidemiology; D012908:Snails; D013045:Species Specificity; D014774:Virulence; D014957:Wuchereria