Definition: Members of the class Arachnida, especially SPIDERS; SCORPIONS; MITES; and TICKS; which transmit infective organisms from one host to another or from an inanimate reservoir to an animate host.
coord IM with specific arachnid (IM); specify both infecting organism & vector if pertinent; in the rickettsial-tick-dog relationship, the tick is the arachnid vector, not the dog
Other names Vectors, Arachnid; Vector, Arachnid; Arachnid Vector
