Leptospirosis, a Re-emerging Threat.

Area of Science:

• Infectious Diseases
• Bacteriology
• Public Health

Background:

• Leptospirosis is a zoonotic disease caused by Leptospira spirochetes, typically transmitted through animal urine or contaminated environments.
• Human infections are rare but can manifest with a wide spectrum of symptoms, from asymptomatic to severe illness.
• The epidemiology of leptospirosis is evolving, with potential for increased incidence outside traditionally endemic areas.

Observation:

• A case report of a 59-year-old male presenting with myalgia, fever, and abdominal discomfort.
• Laboratory findings included elevated inflammatory markers, thrombocytopenia, kidney dysfunction, and liver enzyme abnormalities.
• Initial leptospira serology tests were negative, despite clinical suspicion of zoonosis.

Findings:

• A high degree of clinical suspicion led to polymerase chain reaction (PCR) testing for Leptospira, which returned positive.
• The patient received eight days of doxycycline treatment.
• Favorable clinical and analytical outcomes were observed following antibiotic therapy.

Implications:

• This case underscores the importance of maintaining a high index of suspicion for leptospirosis, even in non-endemic regions.
• Diagnostic strategies should consider the timing of testing, with PCR being valuable when serology is negative.
• Awareness of changing leptospirosis epidemiology is critical for timely diagnosis and effective patient management.