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New Insights on Transmission of Sporothrix brasiliensis

Regielly C R Cognialli1,2, Flávio Queiroz-Telles3, Alyson M Cavanaugh4

  • 1Hospital de Clínicas, Federal University of Paraná, Curitiba, Brazil.

Mycoses
|March 26, 2025
PubMed
Abstract

Insights

Sporothrix brasiliensis, a fungus causing sporotrichosis, can persist on various surfaces for weeks. This study shows it survives longest on stainless steel (25 days) and polyester fabric (16 days), highlighting potential fomite transmission routes.

Area of Science:

  • Medical Mycology
  • Infectious Diseases
  • Environmental Microbiology

Background:

  • Sporotrichosis is a globally prevalent saprozoonotic implantation mycosis.
  • Understanding fungal persistence on environmental surfaces is crucial for infection control.

Purpose of the Study:

  • To evaluate the persistence of Sporothrix brasiliensis yeast phase on common environmental surfaces.
  • To determine survival times on stainless steel, MDF wood, tile, and polyester fabric.

Main Methods:

  • Experimental contamination of surfaces with Sporothrix brasiliensis yeast.
  • Fungal cultures performed in triplicate on Mycosel agar.
  • Cultures incubated and sampled every 24 hours for up to 792 hours (33 days).

Main Results:

  • Sporothrix brasiliensis demonstrated significant persistence across tested surfaces.
  • Survival times: MDF wood (10 days), tile (12 days), polyester fabric (16 days), stainless steel (25 days).
  • Stainless steel exhibited the longest fungal viability.

Conclusions:

  • Sporothrix brasiliensis can persist on fomites for extended periods, supporting transmission routes.
  • This in vitro study provides essential data for understanding transmission dynamics.
  • Findings are vital for developing effective control strategies within a One Health framework.
Keywords:
non‐zoonotic fomitespersistencesapronoticsporotrichosistransmissionzoonotic

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