Ascaris Infection - What is It & How to Prevent Becoming Infected

The ascaris lumbricoides is a large intestinal roundworm that lives in the small intestine of its host. Once an adult female ascaris has made its home in the intestine, it can grow up to 12 inches in length. This parasite is the cause of one of the most common human worm infections, ascariasis. In 2002, roughly 1.5 billion people were infected with this ailment, although it is very rare in the United States. The ascaris infection typically occurs in tropical or subtropical climates where there are poor sanitation and hygiene.

The ascaris infection begins with human feces since that is where the eggs are found. The eggs become infectious a few weeks after the feces have contaminated the soil, and the infection is spread when a person accidentally swallows the eggs. Once the eggs are ingested, they make their way to the small intestine where immature worms will hatch. These larvae will make their way through the lungs, and up the throat where they will be swallowed and sent back to the intestines so they can develop into adult roundworms. The adult ascaris will then lay eggs, which are passed in the feces restarting the cycle.

Although the ascaris infection can be asymptomatic, it can cause slower weight gain, as well as abdominal pain, coughing, or difficulty breathing. If you suspect you or your child may be infected, contact your physician. Your doctor will request stool samples for testing. You may also realize you have parasites if you detect a roundworm in your stool. If this occurs, take the worm to your physician for diagnosis. At typical treatment lasts one to three days.

You can prevent an ascaris infection by washing your hands properly after you've used the restroom and before handling food, washing and peeling any raw fruits and vegetables before consumption, and avoiding contact with any soil that may be contaminated with human feces.