Sporotrichosis outbreak and mouldy hay in NSW

Deeksha Dhingra1, David Durrheim, Philippe Porigneaux

  • 1MBBS, MD, MPH, Advanced Trainee Public Health Medicine, Population Health, Hunter New England Health, Wallsend, NSW.

Abstract

Insights

An outbreak of sporotrichosis, a fungal infection, occurred in New South Wales, linked to contaminated hay. Early diagnosis and treatment are crucial for managing this skin condition and preventing complications.

Area of Science:

  • Mycology
  • Infectious Diseases
  • Epidemiology

Background:

  • Sporotrichosis is a fungal infection caused by Sporothrix schenckii.
  • The fungus commonly found in soil, moss, and plants can cause zoonotic transmission.
  • Clinical presentation includes superficial skin nodules that ulcerate, with common lymphocutaneous spread.

Observation:

  • A cluster of six sporotrichosis cases was identified in New South Wales (NSW) in early 2013.
  • Investigations linked the outbreak to exposure to mouldy hay from a local farm.
  • General practitioners were alerted to report chronic, non-healing skin lesions.

Findings:

  • A batch of mouldy hay was identified as the likely source of the sporotrichosis outbreak.
  • Diagnosis delays and unnecessary antibiotic prescriptions were noted.
  • Effective treatment with oral antifungals is available.

Implications:

  • Timely detection and management of sporotrichosis significantly reduce patient morbidity.
  • Referral to specialists like dermatologists or infectious disease experts is recommended.
  • Personal protective measures are essential for preventing sporotrichosis infection.