Risk Warning: The Importance and Role of Domestic Cats in the Transmission of Toxoplasmosis to Humans

oxoplasmosis is a zoonotic disease whose final hosts are cats, and its intermediate hosts are humans and other mammals.This disease does not cause many problems in cats, but it leads to many problems in intermediate hosts such as humans, especially in pregnant women and people with weakened immune systems (1).Toxoplasma gondii is an obligate intracellular parasite with worldwide distribution and belongs to the order of Coccidia (2).As long as the body's immune system is active, the parasites come in the form of cysts (bradyzoite or chronic form).However, if the body's immune system is reduced or impaired, it becomes active, and its clinical symptoms are revealed (3).Given the increasing incidence of AIDS and cancer in the world and other immune-suppressing diseases in which the immune system is weakened, and considering that cancer patients and those receiving organ transplants or immune-mediated patients use drugs that suppress their immune systems, Toxoplasmosis and other opportunistic secondary infections can occur.Thus, this article aimed to indicate the need to identify the parasite in these people as much as possible (4).The classification presented below is based on the international classification of protozoists.