Bartonella quintana and Bartonella henselae.

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Cat-scratch disease is caused by Bartonella henselae

The scientific name for cat scratch disease is Bartonella henselae. It is a bacterial infection that can be transmitted to humans through a scratch or bite from an infected cat.

Bartonella henselae is uncommon or absent in cold climates, which fleas have difficulty tolerating, but prevalent in warm, humid places such as Memphis, Tennessee, where antibodies were found in 71% of the cats tested.