Study maps feline sporotrichosis hotspots during Brazil flood period

A new study in Preventive Veterinary Medicine maps how feline sporotrichosis clustered unevenly across Guaíba, an urban municipality in Rio Grande do Sul, Brazil, during the period surrounding the state’s catastrophic 2024 floods. The authors found that cases were not spread uniformly across the city; instead, transmission appeared concentrated in localized urban microfoci, suggesting that even during major environmental disruption, feline sporotrichosis can persist in highly territorial, neighborhood-level patterns rather than behaving like a citywide diffuse outbreak. The paper adds to growing evidence that southern Brazil’s sporotrichosis burden is established, expanding, and shaped by local social and environmental conditions. (sciencedirect.com)

Why it matters: For veterinary professionals, the study reinforces that sporotrichosis surveillance and control may work best when targeted block by block, not just city by city. That matters in endemic areas where cats are a major reservoir for Sporothrix brasiliensis, the species driving zoonotic transmission in Brazil, and where floods can disrupt access to diagnosis, treatment continuity, sheltering, and animal movement patterns. In practice, clinics, shelters, and public health teams may need to think in terms of hyperlocal case finding, PPE use, treatment adherence, and One Health coordination, especially after disasters that displace cats and pet parents. (sciencedirect.com)

What to watch: Watch for follow-up work on whether the 2024 flood altered long-term transmission corridors in Rio Grande do Sul, and whether municipalities respond with more localized surveillance and shelter-based control measures. (sciencedirect.com)