A rare parasitic infection known as raccoon roundworm has been confirmed in Los Angeles, according to the Los Angeles County Department of Public Health. The infection, caused by a parasitic worm from raccoons' intestines, has been diagnosed in two individuals in the South Bay area of Los Angeles County.
When the parasite, Baylisascaris procyonis, infects humans, it can impact the brain, spinal cord, and eyes, potentially leading to brain swelling and eye disease. The worms produce eggs in raccoons' intestines, which are then passed through the animals' feces. These eggs can remain infectious for years under suitable conditions.
While raccoons are the natural hosts for this parasite, accidental infections can occur in domestic dogs and humans. The roundworm infects new hosts through ingestion of the infective larval stage, either by consuming the infected host or by ingesting contaminated feces in the environment.
Although rare, infection can happen when individuals accidentally ingest the roundworm's eggs from soil, water, or contaminated objects. Young children and developmentally disabled persons are at higher risk due to their likelihood of putting contaminated fingers, soil, or objects in their mouths.
The infection cannot be transmitted among people, but the risk is concerning as raccoons often live in close proximity to humans, with a potentially high infection rate among them.
Prevention measures include avoiding direct contact with wild animals, washing hands regularly, keeping pets healthy, and preventing wildlife from sheltering near homes. Keeping attics and crawl spaces closed, keeping pets indoors or on leashes when outdoors, and regular deworming of pets are recommended preventive actions.
Hand-washing is crucial, especially after outdoor activities, to reduce the risk of inadvertently ingesting the parasite's eggs. Covering sandboxes when not in use is advised to prevent animals from using them for defecation or urination.
Overall, maintaining good hygiene practices and taking precautions when interacting with wildlife can help reduce the risk of raccoon roundworm infection and ensure the safety and health of individuals and communities.
