A large outbreak of leptospirosis occurred among De-Suup trainees in Dewathang, Bhutan, following immersion in a contaminated pond during the monsoon season. The outbreak, initially presenting as a cluster of severe respiratory illnesses, resulted in 180 confirmed cases, 89 hospitalizations, and three fatalities, with Leptospira spp. laboratory-confirmed as the causative agent.
Leptospirosis: Leptospires are transmitted via the urine of rodents (especially rats), e.g. in water residues (rivulets, puddles, etc.) or mud. Transmission to humans occurs through direct or indirect contact with rodent urine via small skin lesions or mucosal surfaces. The clinical picture ranges from flu-like general symptoms to aseptic meningitis and sepsis. Vaccination is not available for travellers.
Prevention: Wear waterproof protective clothing/boots when wading through water! Cuts or scratches should be covered with waterproof bandages. Vaccination is not available for travelers.