General aspects of epidemiology and control.
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000453:epidemiology* / Q000517:prevention & control; D005211:Fascioliasis / Q000453:epidemiology / Q000517:prevention & control / Q000635:transmission / Q000662:veterinary*; D012621:Seasons; D012756:Sheep; D012757:Sheep Diseases / Q000453:epidemiology* / Q000517:prevention & control; D013548:Sweden