- Borreliosis – Lyme disease (Borrelia burgdorferi) – the most common tick-borne disease in humans and animals with multiform course, often with permanent complications.
- Tick-borne, viral encephalitis and meningitis (Flaviviridae) disease of people (mainly) and animals. Characterized by symptoms resulting from inflammation of the meninges, or brain and meningitis, rarely core and meningitis.
- Babesioses (Babesia canis) – Extremely dangerous disease of dogs and cats with a very serious and often fatal course.
- Hepatozoonosis (Hepatozoon canis) disease of dogs with different clinical course, often leads to debilitation (cachexia).
- Q fever (Coxiella burnetti).
- Ehrlichiosis (Ehrlihia spp.) disease of dogs, the symptoms are varied, can be observed a high fever, weight loss leading to anorexia.
- Haemobartonellosis (Haemobartonella felis, canis). The disease of dogs and cats during which there is a breakdown of red blood cells and the development of anemia.
- Paralysis of the peripheral nerves. The disease of people, dogs and cats. It is caused by toxins introduced into the host organism by parasitic ticks.