Ascariasis
Ascariasis lumbricoides is the most common human worm infection. Ascarid eggs are found in the soil. Infection occurs when a person ingests infective ascarid eggs. Once in the stomach, larvae hatch from the eggs. The larvae are carried through the lungs then to the throat where they are then swallowed. Once swallowed, they reach the intestines and develop into adult worms. Adult female worms lay eggs that are then passed in faeces; this cycle will take between 2-3 months.
Occurrence: Infection occurs worldwide and is most common in tropical and subtropical areas where sanitation and hygiene are poor. Children are infected more often than adults are.
Manifestations : Most people have no symptoms. If you are heavily infected, you may have Abdominal pain. cough, while the immature worms migrate through the lungs, difficulty breathing. Intestines may become blocked.
Diagnose and treatment: Diagnose is based on stool samples for testing. There is no blood test used to diagnose an ascarid infection. Treatment is effective with antibiotics.
Vaccine: Not available
Prevent infection with ascarids by :
Avoid contacting soil that may be contaminated with human faeces. Do not defecate outdoors. Dispose of diapers properly. Wash hands with soap and water before handling food. When travelling to countries where sanitation and hygiene are poor, avoid water or food that may be contaminated. Wash, peel or cook all raw vegetables and fruits before eating.
Ascariasis Resource: A Single Dose of Oral BCG Moreau Fails to Boost Systemic IFN-γ Responses to Tuberculin in Children in the Rural Tropics: Evidence for a Barrier to Mucosal Immunization. J Trop Med . 2012;2012:132583. Epub 2012 Jan 11[Prevention and treatment of ascariasis in demonstration plots of integrated control from 2006 to 2009]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi . 2011 Oct;23(5):490-4. Chinese.[Establishment and application of ascariasis transmission mathematical models in China]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi . 2011 Oct;23(5):483-9. Chinese.Ascaris Lumbricoides infestation and intestinal MZBCL: A surgical and radiological perspective. Clin Ter . 2011 Nov;162(6):e169-71The burden of moderate-to-heavy soil-transmitted helminth infections among rural malaysian aborigines: an urgent need for an integrated control programme. Parasit Vectors . 2011 Dec 30;4:242Endoscopic diagnosis in Ascaris lumbricoides case with pyloric obstruction. Turkiye Parazitol Derg . 2011;35(4):210-3. doi: doi:10.5152/tpd.2011.53Genetic diversity of Ascaris in southwestern Uganda. Trans R Soc Trop Med Hyg . 2012 Feb;106(2):75-83. Epub 2011 Dec 20Magnetic resonance demonstration of gall bladder ascariasis . Indian J Gastroenterol . 2011 Dec 17. [Epub ahead of print] No abstract available.Epidemiological and clinical picture of parasitic infections in the group of children and adolescents from north-east region of Poland. Wiad Parazytol . 2011;57(3):179-87Short report: Molecular insights for Giardia, Cryptosporidium, and soil-transmitted helminths from a facility-based surveillance system in Guatemala. Am J Trop Med Hyg . 2011 Dec;85(6):1141-3Prevalence and epidemiology of intestinal parasitism, as revealed by three distinct techniques in an endemic area in the Brazilian Amazon. Ann Trop Med Parasitol . 2011 Sep;105(6):413-24Comparative analyses of the complete mitochondrial genomes of Ascaris lumbricoides and Ascaris suum from humans and pigs. Gene . 2012 Jan 15;492(1):110-6. Epub 2011 Oct 30[Elimination of juvenile stages of Ascaris lumbricoides (Linnaeus, 1758) by mouth. Report of a case and some epidemiological considerations]. Rev Chilena Infectol . 2011 Oct;28(5):479-83. Epub 2011 Oct 19. Spanish.Utilizing environmental, socioeconomic data and GIS techniques to estimate the risk for ascariasis and trichuriasis in Minas Gerais, Brazil. Acta Trop . 2012 Feb;121(2):112-7. Epub 2011 Oct 21Ivermectin in human medicine, an overview of the current status of its clinical applications. Curr Pharm Biotechnol . 2011 Oct 31. [Epub ahead of printAscaris suum draft genome. Nature . 2011 Oct 26;479(7374):529-33. doi: 10.1038/nature10553[Accidental intoxication with eucalyptus oil--a case report]. Przegl Lek . 2011;68(8):555-6. Polish.Zoonotic ascariasis , United Kingdom. Emerg Infect Dis . 2011 Oct;17(10):1964-6. No abstract available.Picture of the month. Recurrent biliary colic in a young girl. Arch Pediatr Adolesc Med . 2011 Oct;165(10):957. No abstract available.Water- and wastewater-related disease and infection risks: what is an appropriate value for the maximum tolerable additional burden of disease? J Water Health . 2011 Jun;9(2):217-24First
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