A person is infected with pinworms by ingesting pinworm eggs either directly or indirectly. These eggs are deposited around the anus by the worm and can be carried to common surfaces such as hands, toys, bedding, clothing, and toilet seats.
How is pinworm infection spread? Pinworm infection is spread by the fecal-oral route, that is by the transfer of infective pinworm eggs from the anus to someone's mouth, either directly by hand or indirectly through contaminated clothing, bedding, food, or other articles.
Pinworm infections are very common, affecting approximately 1 billion people worldwide. People of all ages can become infected with pinworms, but the infections are found most often in children. Caregivers and family members of infected children have a higher risk of infection.
Causes of threadworms
Scratching the anus or vagina, or wiping them after going to the toilet, can cause the eggs to stick to your fingertips or under your fingernails. If you don't wash your hands, the eggs can be transferred to your mouth or on to food or objects, such as toys and kitchen utensils.
Pinworm eggs become infective within a few hours after being deposited on the skin around the anus and can survive on objects for 2 to 3 weeks.
Prevention of Pinworm Infestation
Pinworm reinfestation is common because viable ova may be excreted for 1 week after therapy, and ova deposited in the environment before therapy can survive 3 weeks. Multiple infestations within the household are common, and treatment of the entire family may be necessary.
Showering is a better method than taking a bath, because showering avoids potentially contaminating the bath water with pinworm eggs. Infected people should not co-bathe with others during their time of infection.
The tiny (microscopic) eggs can be carried to your mouth by contaminated food, drink or your fingers. Once swallowed, the eggs hatch in the intestines and mature into adult worms within a few weeks. Female pinworms move to the anal area to lay their eggs, which often results in anal itching.
Your child may be fussy and wake often at night. If your child is infected, it may take 2 to 8 weeks for symptoms to start.
It moves. If it doesn't wiggle, it's probably lint or a thread. The worm may be seen around the anus or on the child's bottom. It is especially active at night or early morning.
Prevalence of Enterobiasis
Infestation with pinworm ( Enterobius vermicularis) is known as enterobiasis. This is the most common helminth infestation in the United States, with an estimated 42 million infested, translating to 14% of the population.
Do not scratch. Itching around the anus caused by a pinworm infection usually happens at night. Try wearing gloves, pyjamas, and close-fitting clothing to help prevent scratching.
Summary. Pinworm is the most common worm infection in Australia. The major symptom is an itchy bottom, particularly at night. Treatment usually includes a single or 2-dose course of medication that should be taken by all members of the affected household.
Up to half of kids, typically between ages 5 to 10, will get a pinworm infection at some point, according to the Centers for Disease Control and Prevention. It is the most common parasitic infection in the U.S.
Tiny Black Worms or Larvae in My Toilet
These pests live off of sewage and decaying matter, which makes your toilet a perfect location for them. Adult females lay large clusters of eggs, which explains why there may be more than one worm in your toilet.
Pinworm eggs can cling to surfaces, including toys, faucets, bedding and toilet seats, for two weeks. So besides regular cleaning of surfaces, methods to help prevent the spread of pinworm eggs or to prevent reinfection include: Wash in the morning.
But parasites can easily sneak into our tap water supplies too. Both here in the United States and abroad, even if your tap water is running clear, that doesn't mean it's entirely safe. The microscopic parasite Giardia, for example, is found in every region of the US.
Pinworm eggs can also be transferred to the fingers from clothing or bedding, and then spread around the home. Eggs may be inhaled from the air or deposited onto food and swallowed. Pinworms can survive up to two weeks on clothing, bedding or other objects, if kept at room temperature.
You get pinworms by accidentally swallowing or breathing in their eggs. You could eat or drink something that's contaminated with them and not know it. The eggs can also live on surfaces like clothing, bedding, or other objects.
Complete die-off within the tested exposure time range was noted for 70 °C, 75 °C and 80 °C, however treatment at 60 °C and 65 °C allowed for development of a few eggs after incubation.
Scratching an affected area and then eating can lead to unintentionally ingesting pinworm eggs. This can lead to a repeat pinworm infection. Sometimes eggs on the anus hatch, and the larvae can reenter the large intestine. If not treated, this can cause the infection to continue indefinitely.
Pinworms don't cause any harm (just itching and restless sleep), and it won't take long to get rid of them.
How long does pinworms last? The life cycle of a pinworm is 4 to 6 weeks. Without treatment, infestation will continue as long as fresh eggs are being swallowed, unless a person develops immunity to pinworms, which is unusual before age 15.