Mathematical model of the dynamics of transmission and control of sporotrichosis in domestic cats

PLoS One. 2023 Feb 6;18(2):e0272672. doi: 10.1371/journal.pone.0272672. eCollection 2023.

Abstract

Sporotrichosis is a subcutaneous mycosis with a global distribution, also known as "rose gardener's disease". Brazil is experiencing a rapid spread of the zoonotic transmission of of Sporothrix brasiliensis, the main etiological agent of this disease in this country, affecting domestic felines. Cost-effective interventions need to be developed to control this emergent public health problem. To allow for the comparison of alternative control strategies, we propose in this paper, a mathematical model representing the transmission of S. brasiliensis among cats, stratified by age and sex. Analytical properties of the model are derived and simulations show possible strategies for reducing the endemic levels of the disease in the cat population, with a positive impact on human health. The scenarios included mass treatment of infected cats and mass implementation of contact reduction practices, such as neutering. The results indicate that mass treatment can reduce substantially the disease prevalence, and this effect is potentialized when combined with neutering or other contact-reduction interventions. On the other hand, contact-reduction methods alone are not sufficient to reduce prevalence.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Brazil / epidemiology
  • Cat Diseases* / epidemiology
  • Cat Diseases* / prevention & control
  • Cats
  • Dermatomycoses*
  • Humans
  • Models, Theoretical
  • Prevalence
  • Sporothrix*
  • Sporotrichosis* / epidemiology
  • Sporotrichosis* / prevention & control
  • Sporotrichosis* / veterinary

Grants and funding

We acknowledge financial support from CAPES to AAA in the form of a PHD scholarship. SAP is a CNPq Research Productivity Fellow (CNPq 312238/2020-7) and is supported by the State Funding Agency Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ - E-26/201.737/2019). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.