The importance of using a right test method in diagnosing leptospirosis

Area of Science:

• Infectious Diseases
• Microbiology
• Public Health

Background:

• Leptospirosis is a zoonotic bacterial infection prevalent in Malaysia, presenting with diverse symptoms that can mimic other febrile illnesses.
• Transmission occurs through contact with water or soil contaminated by infected animal urine.
• The disease spectrum ranges from asymptomatic to severe, life-threatening multiorgan failure.

Observation:

• A 13-year-old girl with outdoor exposure presented with symptoms mimicking other febrile illnesses.
• Initial serological tests for leptospirosis were inconclusive.
• The patient developed septic shock on day 14 of illness.

Findings:

• High clinical suspicion for leptospirosis prompted enhanced antibiotic therapy with ceftriaxone.
• Molecular detection of leptospires in urine samples confirmed the diagnosis.
• The patient demonstrated significant improvement following appropriate treatment.

Implications:

• This case highlights the importance of considering leptospirosis in febrile illnesses, especially with a history of potential exposure.
• Molecular diagnostic techniques are crucial for timely and accurate leptospirosis diagnosis when serology is negative.
• Prompt and appropriate antibiotic treatment is vital for managing severe leptospirosis and preventing mortality.