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Ascaris lumbricoides is a large parasitic roundworm of the genus Ascaris. It is the most common parasitic worm in humans. [ 1 ] An estimated 807 million–1.2 billion people are infected with Ascariasis. lumbricoides worldwide. [ 2 ]
Ascariasis is a disease caused by the parasitic roundworm Ascaris lumbricoides. [1] Infections have no symptoms in more than 85% of cases, especially if the number of worms is small. [1] Symptoms increase with the number of worms present and may include shortness of breath and fever at the beginning of the disease. [1]
These eggs are also called ova in the literature. [42] Helminth eggs that are found in wastewater and sludge stem from soil-transmitted helminths (STHs) which include Ascaris lumbricoides (Ascaris), Anclostoma duodenale, Necator americanus (hookworm), and Trichuris trichiura (whipworm). [43]
A. lumbricoides was originally called Lumbricus teres and was first described in detail by Edward Tyson in 1683. [8] The genus Ascaris was originally described as the genus for Ascaris lumbricoides by Carl Linnaeus in 1758. [9] The morphologically similar Ascaris suum was described from pigs by Johann August Ephraim Goeze in 1782. [9]
Davis and Butler were in critical condition. After about four days, the staff was able to confirm the ascariasis diagnosis upon isolating live larvae, about 4 mm long, in the sputum and gastric washings. This confirmed exposure to ascariasis ova which were in the microscopic larval stage, migrating via the blood from intestine to lung.
Female Ascaris lumbricoides. Ascariasis of STH is caused by the large roundworm A. lumbricoides. It is estimated to be the most widespread STH, affecting approximately 1 billion people. The victims constitute about half of the populations in tropical and subtropical areas. Most conditions are mild and often show little or no symptoms. Heavy ...
Hepatolithiasis is associated with Clonorchis sinensis and Ascaris lumbricoides infestation of the liver. This theory is based on high incidence of dead parasites or ova within stone in autopsy findings. [10] [11]
Ascaris infection: Antimesenteric splitting of the outer layers of the bowel wall due to a large amount of ascaris (South Africa) The signs and symptoms of helminthiasis depend on a number of factors including: the site of the infestation within the body; the type of worm involved; the number of worms and their volume; the type of damage the ...