Helicobacter pylori

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Helicobacter pylori

Helicobacter pyloriBy: Fernando Marchena, Sadella Justavino12-2Etiological agentH. pylori is the causative agent of human chronic gastritis, a condition that often leads to gastrointestinal ulcers and cancer.

Helicobacter PyloriHelicobacter pylori is a spiral shaped bacterium that lives in the stomach and duodenum (section of intestine just below stomach). It has a unique way of adapting in the harsh environment of the stomach.

TransmissionThe exact route of transmission is not known. Person-to-person transmission by either the oral-oral orfecal-oral routeis the most likely. Consistent with these transmission routes, the bacteria have been isolated fromfeces,salivaanddental plaqueof some infected people. Findings suggest that H. pylori is more easily transmitted via gastric mucus than via saliva.Clinical SignsMost common: burning pain in the abdomen, heartburn, indigestion.Less common: vomiting, nausea, loss of appetite, weight loss, bloody stools, and anemia

Geographical Distribution

Worldwide StatisticsRoughly 2/3 of the worlds population is infected withH. pylori, however many never suffer from symptoms. People in developing countries are more at risk for infection than people from developed countries. Roughly 1% of the adult population from developed countries will be infected a year.VectorHouseflies can carry viableH. pylorion their bodies, in their intestinal tracts, and in excreta.Humans and animals, including non-human primates, pigs, cattle, dogs, cats, rodents, birds

Panama Statistics

BibliographyCenters for Disease Control and Prevention.Helicobacter pyloriand Peptic Ulcer Disease..http://www.cdc.gov/ulcer/consumer.htm.Centers for Disease Control and Prevention. The Key to Curehttp://www.cdc.gov/ulcer/keytocure.htm.Blaser, Martin J., Perez-perez, Guillermo I. CampylobacterandHelicobacter. 2001.http://www.gsbs.utmb.edu/microbook/ch023.htm.Kelleher, Dermot. Helicobacter pylori: camouflage and stealth. 2000.http://www.irishscientist.ie/2000/contents.asp?contentxml=037Bs.xml&contentxsl=insight3.xsl.MicrobeWiki. Helicobacter.http://microbewiki.kenyon.edu/index.php/Helicobacter.