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.
Pinworm eggs become infective within a few hours after being deposited on the skin around the anus and can survive for 2 to 3 weeks on clothing, bedding, or other objects.
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.
The eggs can survive on surfaces or objects (such as furniture, kitchen surfaces and toothbrushes) for up to 2 weeks in the right conditions and can infect other people if transferred to the mouth or food. Household pets cannot be infected with pinworms or pass them on to humans.
Vacuum or brush upholstered furniture. Change the vacuum cleaner bag daily and seal it before throwing it away. so that they can take extra care with linens and hand washing. Your child may return to school or child care 24 hours after treatment.
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.
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.
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.
Pinworms spread easily. When people who are infected touch their anus, the eggs attach to their fingertips. They can spread the eggs to others directly through their hands, or through contaminated clothing, bedding, food, or other articles. The eggs can live on household surfaces for up to 2 weeks.
In order to stop the spread of pinworm and possible re-infection, people who are infected should shower every morning to help remove a large amount of the eggs on the skin. Showering is a better method than taking a bath, because showering avoids potentially contaminating the bath water with pinworm eggs.
Change underwear and bedding daily.
This helps remove eggs.
Each morning, give your child a shower during the 2 weeks of treatment. Always rinse the anal area. Continue for 3 days after taking the second dose of pinworm medicine.
Pinworm infections are highly contagious. The infection cycle typically follows these steps: An individual acquires an infection by ingesting or inhaling pinworm eggs. These microscopic eggs are usually deposited onto a surface by a person with the infection.
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.
When and for how long is a person able to spread the disease? A person will remain infectious for as long as there are worms laying eggs on the skin around his or her rectum. Pinworm eggs can remain infectious in an indoor environment for two to three weeks.
Pinworm infections are contagious. The worms get into the body when people swallow the tiny pinworm eggs. The eggs can be on contaminated hands, under fingernails, and on things people touch a lot, such as: clothing, bed linens, and towels.
Adults are rarely affected, except for parents of infected children. Infection often occurs in more than one family member. While an infected person sleeps, female pinworms crawl out of the anus and lay their eggs on the surrounding skin.
Symptoms and Causes
Symptoms of a pinworm infection (enterobiasis) include: Anal itching, especially at night: Pinworms lay their eggs around the anus at night, causing itching and irritation.
Reinfection does happen with pinworm
Reinfection can happen by touching surfaces that have already been contaminated with pinworm eggs by another person. Eggs are swallowed, usually after hand-to-mouth contact, and the pinworm infection begins again.
The medications used for the treatment of pinworm are either mebendazole, pyrantel pamoate, or albendazole. Any of these drugs are given in one dose initially, and then another single dose of the same drug two weeks later. Pyrantel pamoate is available without prescription.
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.
For the itching, wash the skin around the anus with warm water. For severe itch, use 1% hydrocortisone cream (such as Cortaid) 2 times per day. Use for 1 or 2 days. No prescription is needed.
Inform patients and parents that vacuuming and other types of housekeeping are not likely to reduce pinworm infection since pinworms do not persist on rugs or kitchen countertops. Pinworms are found in soil and on human skin. The eggs can also persist for up to two weeks on bedding and clothing.
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.