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Worms commonly live for about one year, [5] during which time females can lay up to 20,000 eggs per day. Recent studies using genome-wide scanning revealed that two quantitative trait loci on chromosome 9 and chromosome 18 may be responsible for a genetic predisposition or susceptibility to infection of T. trichiura by some individuals.
Over the next two to three months the larvae develop into adult male and female worms. The male remains small at 4 cm (1.6 in) long and 0.4 mm (0.016 in) wide; the female is comparatively large, often over 100 cm (39 in) long and 1.5 mm (0.059 in) wide. [5] Once the worms reach their adult size they mate, and the male dies. [6]
They have a direct lifecycle and do not require an intermediate host. Adults are hermaphrodites, meaning they have both male and female reproductive structures. [1] Some monogeneans are oviparous (egg-laying) and some are viviparous (live-bearing). Oviparous varieties release eggs into the water.
Pregnancy is a special time for many women. It's filled with magical moments. Creating new life. Watching your body grow. Hearing a heartbeat. Seeing the first scan. Preparing to welcome a baby.
Some people who are infected do not have symptoms. [1] The disease is spread between people by pinworm eggs. [1] The eggs initially occur around the anus and can survive for up to three weeks in the environment. [1] They may be swallowed following contamination of the hands, food, or other articles. [1]
Parasitic worms, also known as helminths, [1] are a polyphyletic group of large macroparasites; adults can generally be seen with the naked eye. Many are intestinal worms that are soil-transmitted and infect the gastrointestinal tract .
Roundworms, tapeworms, hookworms, coccidia, and giardia are parasites that can infest a cat’s digestive system and cause gas and fluid buildup, vomiting, a swollen abdomen, and other symptoms.
Studies so far have validated recommendations to treat infected pregnant women for hookworm infection during pregnancy. A review found that a single dose of antihelminthics (anti-worm drugs) given in the second trimester of pregnancy "may reduce maternal anaemia and worm prevalence when used in settings with a high prevalence of maternal ...