Leptospirosis (Weil's Disease)%u2022 Spirochete: The causative organism (Leptospira)%u2022 Rat: Common carrier of Leptospira%u2022 Well: Associated with contaminated water sourcesKey Associations:Mnemonic %u2022 \:%u2022 Leptospirosis is also known as Weil's disease in its Note: severe form