close up shot of a tick on a white surface

acari acarid acarus allergy animal arachnid arthropod babesiosis background biology bite blood borne borrelia borreliosis bug close danger dangerous dermacentor detail disease edema encephalitis epidemic fever illness immune infection insect insecticide isolated ixodes kfd kyasanur lethal lyme macro medicine mite monkey parasite parasitic pest sick sickness sting tick virus white