tick filled with blood on human skin

acarid anaplasmosis animal arachnid arthropod babesiosis biology bite black blood bloodsucker boreliosis borne borreliose borreliosis bug carrier close closeup danger dangerous disease ehrlichiosis encephalitis human illness infection infestation insect ixodes ixodid leg louse lyme macro mite pacificus parasite parasitic pest ricinus sickness skin small spider sucker sucking tick unhygienic