• Various bacteria (e.g., Pseudomonas, Leptospira, Bartonella, Legionella, H. pylori, Treponema)
• Various fungi (e.g., Aspergillus, Pneumocystis, Coccidioides, Cryptococcus, Candida)

Mnemonic

Helicobacter pylori, Legionella, Bartonella henselae, and fungi (eg, Coccidioides, Pneumocystis jirovecii, Aspergillus fumigatus) HeLiCoPters Are silver