# Baylisascaris procyonis Roundworm in Common Raccoon (Procyon lotor), Mexico

**Authors:** Ana Luisa Gómez-Sánchez, Carlos Daniel Pinacho-Pinacho, Juan José Barrios-Gutierrez, Ismael Guzmán-Valdivieso, Alberto Gonzalez-Romero, Tania Fonseca-Leal, Andrés M. López-Pérez

PMC · DOI: 10.3201/eid3106.241672 · Emerging Infectious Diseases · 2025-06-01

## TL;DR

A study found a roundworm in raccoons in Mexico that can infect humans, highlighting the need for increased awareness and surveillance.

## Contribution

The first report of Baylisascaris procyonis in raccoons from Mexico.

## Key findings

- Baylisascaris procyonis was identified in a common raccoon in Mexico.
- Raccoon expansion into human areas may increase human infection risk.
- Surveillance and awareness of baylisascariasis are needed in Mexico.

## Abstract

We found the zoonotic nematode, Baylisascaris procyonis, in a common raccoon (Procyon lotor) in Mexico. Expansion of raccoons into human-dominated regions might increase the risk of B. procyonis infections in humans. Increased surveillance and healthcare provider awareness of baylisascariasis in Mexico will be needed to prevent those infections in humans.

## Linked entities

- **Diseases:** baylisascariasis (MONDO:0000297)
- **Species:** Procyon lotor (taxon 9654), Baylisascaris procyonis (taxon 6259)

## Full-text entities

- **Diseases:** B. procyonis infections (MESH:D017191)
- **Species:** Baylisascaris procyonis (raccoon roundworm, species) [taxon 6259], Homo sapiens (human, species) [taxon 9606], Procyon lotor (northern raccoon, species) [taxon 9654]

## Full text

_Full body text omitted from this summary view._ Fetch the complete paper as Markdown: https://tomesphere.com/paper/PMC12123920/full.md

## Figures

2 figures with captions in the complete paper: https://tomesphere.com/paper/PMC12123920/full.md

## References

10 references — full list in the complete paper: https://tomesphere.com/paper/PMC12123920/full.md

---
Source: https://tomesphere.com/paper/PMC12123920