Bartonella henselae

Microbiology / Bacteria / Gram Positive Cocci

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Discover the causes and symptoms of cat-scratch disease and bacillary angiomatosis, both caused by the gram-negative zoonotic bacillus, Bartonella henselae. This bacterium is transmitted through cat scratches, bites, or infected fleas and is visualized using the Warthin-Starry silver stain. Cat-scratch disease typically presents as painful axillary lymphadenopathy and mostly affects immunocompetent patients. On the other hand, bacillary angiomatosis is characterized by angiomatous skin lesions, and immunocompromised patients are at higher risk. Both conditions can be treated effectively with doxycycline and macrolides.

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1. Bart the Leopard - Bartonella henselae (a gram-negative zoonotic bacillus)
2. Leopard - Bartonella henselae causes cat-scratch disease
3. Red Pillow - Bartonella henselae bacteria are gram-negative
4. Silver Starry Night - the Warthin-Starry stain is a silver stain used to visualize Bartonella henselae
5. Cat scratches on immunocompetent princess - cat scratch disease is transmitted via cat scratches, bites, or infected fleas
6. Armpit Ruffles - cat-scratch disease commonly presents with painful axillary lymphadenopathy
7. Healthy Young Princess - cat-scratch disease commonly occurs in immunocompetent patients
8. Cat scratches on immunocompromised prince - bacillary angiomatosis is transmitted via cat scratches, bites, or infected fleas
9. Red Polka Dots - bacillary angiomatosis is characterized by angiomatous skin lesions, which typically start as reddish papules but can  grow into large, highly vascular lesions or nodules
10. Immunocompromised Cane - immunocompromised patients are at a higher risk for bacillary angiomatosis
11. Bicycle Wheel - doxycycline is effective against Bartonella henselae
12. Crows - macrolides are effective against Bartonella henselae