In a follow-up report on the increase in leptospirosis cases in Mumbai, India, local media reports the city has seen 27 cases in the past two days  and the city’s first leptospirosis-related fatality in a 35-year-old woman.

Image/CDC
Image/CDC

Doctors say that with the rains slowing down, they are expecting a surge in leptospirosis cases in the city and have warned Mumbaikars of the same.

Leptospirosis is caused by a corkscrew-shaped bacterium called Leptospira interrogans, is often referred to as “rat fever” due to the principal role rats play in spreading the disease (scientists refer this type of animal as a reservoir host).  Other animals can also be important reservoirs of the disease.

These animals can spread the disease in their urine, contaminating water, soil, or food.  People who live in close contact with domestic animals or wildlife are at higher risk for getting the disease.

People become infected by coming into contact with contaminated urine, water, food, or soil through breaks in the skin, eyes, mouth, or nose. Outbreaks of leptospirosis are usually caused by exposure to contaminated water, such as floodwaters. Person to person transmission is rare. Infected individuals initially experience fever, severe headache and muscle aches, abdominal pain, and occasionally a skin rash.  Patients in the later stages of disease can suffer from jaundice, kidney failure, bleeding from the mouth or nose, bloody urine and can be fatal, especially without proper treatment.

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