Studying risk factors associated with human leptospirosis

Area of Science:

• Infectious Diseases
• Public Health
• Epidemiology

Background:

• Leptospirosis is a neglected tropical disease, often underdiagnosed and underreported globally, including in India.
• Environmental conditions and occupational habits are known risk factors, varying significantly across communities.
• Limited studies have identified specific risk factors for leptospirosis in India.

Purpose of the Study:

• To identify environmental and occupational risk factors associated with leptospirosis in Udupi District, Southern India.
• To provide data for targeted public health interventions and disease control strategies.

Main Methods:

• A population-based case-control study was conducted in Udupi District from April to August 2012.
• Data were collected from 70 confirmed leptospirosis cases and 140 healthy controls using a predesigned questionnaire and house-to-house observations.
• Statistical analysis included univariate and multivariate logistic regression to identify risk factors.

Main Results:

• Outdoor activities (OR: 3.95) and working with cuts or wounds (OR: 4.88) were significant occupational risk factors.
• Contact with rodents via contaminated food (OR: 4.29) and exposure to rodent-urine-contaminated soil or water (OR: 4.58) were key environmental risk factors.
• All identified risk factors showed statistically significant associations with leptospirosis.

Conclusions:

• Leptospirosis remains a neglected disease in Udupi District, necessitating early diagnosis and prompt treatment.
• Integrated rodent control measures are essential for effective disease management.
• Increased public awareness and education are vital for preventing leptospirosis transmission.