Giardia lamblia

The Transfer of Human Infections by Foods
  • Robert J. Barnard
  • George J. Jackson

Abstract

Foods may be involved in the spread of Giardia cysts (Table 1) not because the animal or plant source is a requisite host in the life cycle of the parasite, but because of circumstances that cause food contamination (Bier, 1981; Healy et al., 1976). Although the epidemiology of giardiasis appears to resemble that of amebiasis, it is not identical and is not as well documented. A comparison of Entamoeba histolytica and Giardia infections shows that age prevalence curves for E. histolytica infections nearly always indicate a steady level in adults, whereas with Giardia infections there is a marked age decline. Giardiasis is of relatively short duration and, at least in normal adults, rarely exceeds 3 months; in contrast, an E. histolytica infection may last for many years.

Keywords

Intestinal Parasite Entamoeba Histolytica Stool Examination Food Handler Giardia Cyst 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1984

Authors and Affiliations

  • Robert J. Barnard
    • 1
  • George J. Jackson
    • 1
  1. 1.Division of MicrobiologyFood and Drug AdministrationUSA

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