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Istituto Superiore di Sanità
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Epidemiology for public health - ISS

Gonorrhoea Virus (CDC Photo)

Ticks are arthropods of the Ixodida order and belong to the Arachnida class, which includes also spiders, mites and scorpions. They are external parasites, and their size can range from a few millimetres to about 1 centimetre, depending on the species and development stage. They are characterized by a rounded body, indistinguishable from the head, and mouthparts (rostrum) that can pierce the skin of their hosts and suck their blood.

Publication date: 28 December 2020