Prognostic Factors for Leptospirosis Infection Severity

Area of Science:

• Infectious Diseases
• Clinical Medicine
• Epidemiology

Background:

• Leptospirosis poses a significant public health challenge in Thailand, with varying disease severity.
• Early identification and management of severe leptospirosis are critical to prevent complications and reduce mortality.
• This study aimed to identify predictors for severe leptospirosis in clinical practice.

Purpose of the Study:

• To explore parameters for predicting severe leptospirosis illness.
• To identify key clinical and laboratory indicators associated with severe disease.
• To provide a basis for developing a predictive scoring system.

Main Methods:

• A case-control study was conducted across eight general hospitals in Thailand.
• Retrospective data were collected from inpatient medical records.
• A multivariate model was developed using backward elimination to identify significant predictors.

Main Results:

• Six significant predictors for severe leptospirosis were identified: hemoptysis, hypotension, low platelet count (<100,000/µL), high white blood cell count (>14,000/µL), low hematocrit (≤30%), and jaundice.
• These predictors demonstrated a high accuracy in predicting severe leptospirosis, with an area under the receiver operation curve (AuROC) of 91.31%.
• Odds ratios ranged from 3.11 for jaundice to 25.80 for hemoptysis, indicating strong associations with severe disease.

Conclusions:

• Severe leptospirosis infections exhibit identifiable predictors in a clinical setting.
• The identified predictors can be utilized to create a scoring system for assessing disease severity.
• This tool could aid clinicians in risk stratification and timely intervention for leptospirosis patients.