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      • Those infected by Entamoeba are mostly colonized by either E. histolytica or E. dispar. E. histolytica is the pathogenic form and can cause amoebic colitis and extraintestinal amoebiasis. E. dispar is considered to be nonpathogenic and causes no signs of disease.
      www.ncbi.nlm.nih.gov › books › NBK557718

      Entamoeba histolytica Infection - StatPearls - NCBI Bookshelf

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  3. www.ncbi.nlm.nih.gov › books › NBK557718Entamoeba histolytica Infection - StatPearls - NCBI Bookshelf

    Apr 17, 2023 · Those infected by Entamoeba are mostly colonized by either E. histolytica or E. dispar. E. histolytica is the pathogenic form and can cause amoebic colitis and extraintestinal amoebiasis. E. dispar is considered to be nonpathogenic and causes no signs of disease.

  4. www.cdc.gov › dpdx › amebiasisCDC - DPDx - Amebiasis

    • Causal Agents
    • Life Cycle
    • Geographic Distribution

    Several protozoan species in the genus Entamoeba colonize humans, but not all of them are associated with disease. Entamoeba histolytica is well recognized as a pathogenic ameba, associated with intestinal and extraintestinal infections. Other morphologically-identical Entamoeba spp., including E. dispar, E. moshkovskii, and E. bangladeshi, are gen...

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    Cysts and trophozoites are passed in feces . Cysts are typically found in formed stool, whereas trophozoites are typically found in diarrheal stool. Infection with Entamoeba histolytica (and E.dispar) occurs via ingestion of mature cysts from fecally contaminated food, water, or hands. Exposure to infectious cysts and trophozoites in fecal matter d...

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    Pathogenic Entamoeba species occur worldwide and are frequently recovered from fresh water contaminated with human feces. The majority of amebiasis cases occur in developing countries. In industrialized countries, risk groups include men who have sex with men, travelers, recent immigrants, immunocompromised persons, and institutionalized population...

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  5. journals.plos.org › plosntds › articleEpidemiology of clinically relevant Entamoeba spp. (E ... - PLOS

    Sep 7, 2021 · Entamoeba histolytica has long been accepted as the only pathogenic species. However, recent reports of other Entamoeba spp. in symptomatic cases have raised questions on their pathogenicity. Methodology/Principal findings.

    • Aradhana Singh, Tuhina Banerjee, Uzma Khan, Sunit Kumar Shukla
    • 2021

  6. journals.plos.org › plospathogens › articleEntamoeba histolytica and pathogenesis: A calcium connection

    May 7, 2020 · Motility, adhesion, cytolysis, and phagocytosis/trogocytosis are important steps in invasion and pathogenesis of E. histolytica, and Ca 2+ signaling is thought to be associated with these processes leading to tissue invasion.

  7. www.sciencedirect.com › science › articleMolecular epidemiology, evolution, and phylogeny of Entamoeba ...

    Nov 1, 2019 · Entamoeba histolytica is classified as a category B priority biodefense pathogen by the National Institute of Allergy and Infectious Diseases (NIAID) ( Shirley et al., 2018 ). To date, there is no vaccine to prevent amebiasis.

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