Autochthonous Ascariasis, Mississippi, USA

Area of Science:

• Parasitology
• Pediatrics
• Infectious Diseases

Background:

• Ascariasis is a common human parasitic infection caused by the roundworm Ascaris lumbricoides.
• Transmission typically occurs through ingestion of eggs from contaminated soil or food.

Observation:

• A case report details a 2-year-old child from rural Mississippi who passed an adult female Ascaris lumbricoides worm.
• The child had no history of international travel, and the household maintained good sanitation.

Findings:

• Despite good hygiene, the child's infection was linked to potential exposure to domestic pigs.
• This suggests pigs as a potential, though less common, reservoir for Ascaris lumbricoides transmission to humans.

Implications:

• Highlights the importance of considering zoonotic transmission of Ascaris lumbricoides, even in settings with good sanitation.
• Underscores the need for public health awareness regarding potential sources of parasitic infections in children.