American dog tick (Acari: Ixodidae), summer activity on equine premises enzootic for Potomac horse fever in south-central Maryland.
D000818:Animals; D003870:Dermacentor; D005260:Female; D006734:Horse Diseases / Q000453:epidemiology; D006736:Horses / Q000469:parasitology*; D008297:Male; D008396:Maryland; D012282:Rickettsia Infections / Q000453:epidemiology / Q000662:veterinary; D012621:Seasons; D013987:Ticks