Tapeworm infections are rare in the United States. When they do happen, they're easy to treat. Often, people may not know they have a tapeworm infection because they have no symptoms or their symptoms are mild.
"It's very rare, particularly in Australia. There's only one documented case of a type of fish tapeworm in Australia," Dr Ho said. "But in other countries, particularly in the northern hemisphere, people do get them." The longest type of tapeworm found in humans can grow to 10 metres and live for 20 years, Dr Ho said.
The most common tapeworm infection in Australia is caused by dwarf tapeworm.
Tapeworms are uncommon in the U.S. today because of laws on feeding practices and inspection of the animals we use for food. You can further reduce your risk of tapeworms by washing your hands before and after using the toilet and by following these food safety tips.
About five percent of the U.S. population has the parasite, but many doctors are unaware of the infection.
A tapeworm infection is usually diagnosed by finding eggs or tapeworm segments in the stool. Your doctor may ask you to bring in a sample so a lab can look for eggs, larvae, or tapeworm segments. A blood test can spot antigens, foreign substances that let your doctor know your body is trying to fight the infection.
You can easily kill tapeworms with anthelmintic drugs, including praziquantel (Biltricide®), albendazole (Albenza®) and nitazoxanide (Alinia®). Healthcare providers usually recommend praziquantel because it also paralyzes the worm, forcing it to dislodge from your intestinal wall.
Deworming is not always necessary, but is recommended for children who live in endemic areas once a year when the prevalence of soil-transmitted parasitic worms in the community is over 20% and twice a year when the prevalence of soil-transmitted parasitic worms in the community is 50%.
Both the tapeworm infection, also known as taeniasis, and cysticercosis occur globally. The highest rates of infection are found in areas of Latin America, Asia, and Africa that have poor sanitation and free-ranging pigs that have access to human feces.
People who live in close proximity to livestock or free-range animals and/or have poor sanitation have a greater risk of developing a tapeworm infection. Tapeworm infections are more common in developing areas of the world where sanitation is poor and people may eat undercooked meats.
In Australia, the causative tapeworms are considered endemic in wildlife animals, however, there have been only five reported human infections.
Although adult tapeworms in the intestine usually cause no symptoms, some people experience upper abdominal discomfort, diarrhea, and other symptoms. Occasionally, people with a tapeworm can feel a piece of the worm move out through the anus or see part of the ribbon-like tapeworm in stool.
Complications. The most serious symptoms happen when tapeworm larvae invade parts of your body outside the intestines. You may have serious problems with your nervous system, including seizures, or you could get headaches, masses or lumps, allergic reactions to the larvae, or problems with your vision.
Tapeworm infections usually don't cause complications. Problems that may happen include: Anemia. Long-term infection with a fish tapeworm may lead to the body not making enough healthy red blood cells, also called anemia.
The cure rate for tapeworm infestation is greater than 95% in patients who receive appropriate treatment.
Many times, people can be infected for long periods of time without even knowing they have a tapeworm infection. While viral or bacterial infections can disappear in a matter of days or weeks, a tapeworm could be with you for years.
The worms that are passed will be dead, but segments are full of eggs that could potentially hatch. You prevent reinfection by preventing exposure to intermediate hosts. Treat for fleas if there are any. If possible, keep your pet from hunting for mice and birds.
Sometimes, individuals with taeniasis can see tapeworm segments (called proglottids) being passed through the anus and in the stool. Taeniasis can lead to urticaria, an itchy rash of weals and hives.
A person with intestinal worms may not have any symptoms, but threadworms (Enterobius vermicularis), the most common worm infection in Australia, often do cause symptoms. A person with threadworms (also known as pinworms) may have an itchy bottom or redness and scratch marks around the bottom.
If deworming is ignored, these worms have the ability to form cysts in the liver and lungs leading to pneumonia and other neurological conditions. Although there is an increased amount of awareness worldwide about deworming among children, deworming among adults also requires more attention.
Worm infestation can also lead to death.
On the surface, deworming looks like a non-threatening affair, but a lack of it can actually be fatal for you. It is mostly our daily, unhygienic habits that lead to worm infestation.
Once ingested, cysticerci attach to the small intestine and develop into adult tapeworms over the course of 2 months.
Why? Most people do not know they are infected or at risk, or don't have access to appropriate care. And often, health care providers are unfamiliar with these parasitic infections, and may not diagnose or treat them appropriately.
Diagnosis of tapeworm infection
A health care provider tests for a tapeworm infection in the intestines using a test of a stool sample. A lab test may find pieces of tapeworms or eggs. You may give a sample on more than one day.