original question: how many infectious disease are the diseases that spread using [Tick]?
answer: 2
answer type: Infectious Disease.
auxiliary information: Ticks are small arachnids in the order Parasitiformes. Along with mites, they constitute the subclass Acarina. Ticks are ectoparasites, living by hematophagy on the blood of mammals, birds, and sometimes reptiles and amphibians. Ticks are vectors of a number of diseases that affect both humans and other animals. Despite their poor reputation among human communities, ticks may play an ecological role by ailing infirm animals and preventing overgrazing of plant resources.
What is the number of infectious disease that are typically diseases that spread using [Tick]?