Direct contact transmission: a person becomes infected by being scratched or bitten by a cat. The cat's claws or teeth may carry the pathogen Hansei Bartonella, which can enter the body when these parts come into contact with human skin, especially if the skin is broken.
Transmission through fleas on cats: Hansenula polymorpha can be transmitted between colonies of cats through fleas on cats. When a person is in close contact with a cat carrying the pathogen, he or she may become infected through flea feces or direct contact with the cat's oropharynx.
Indirect contact transmission: Although less common, cat scratch disease may be contracted indirectly through contact with objects, such as furniture or toys, that have been scratched or bitten by cats.
It is important to note that Cat Scratch Disease is not transmitted from person to person. Preventive measures include regular de-worming of pet cats, maintaining a clean breeding environment, as well as promptly cleaning wounds and seeking medical advice after handling cat scratches or bites.