Most zoonotic respiratory diseases can cause mild upper respiratory or eye infections only in immunosuppressed individuals, or humans afflicted with pre-existing upper respiratory conditions such as COPD (Chronic Obstructive Pulmonary Disease), Chronic bronchitis and Asthma, for example. However, chronic breathing of contaminated particles may act as a mechanical irritant to the respiratory tract and cause cough, or allergies, in susceptible individuals.
The following are the three most common feline zoonotic diseases
1. Chlamydiosis, caused by Chlamydophila felis (previously know as Chlamydia) is an organism spread to humans through DIRECT contact with eye discharge from an infected cat. It can cause a form of conjunctivitis (pink eye).
2. Bordetella bronchiseptica (tracheobronchitis) can also uncommonly infect humans, but usually only those with AIDS, pneumonia, severe uncontrolled upper respiratory disease, or other immunocompromising disease. The most common mode of transmission is through DIRECT close contact with a sneezing cat. Symptoms include: sneezing, nasal discharge, cough, and pneumonia.
3. Streptococcus A bacteria (Strept Throat) is a human organism that can be spread to cats and than back again.