Abnormal Helminth Egg Development, Strange Morphology, and the Identification of Intestinal Helminth Infections

Occasionally, abnormal forms of parasitic helminth eggs are detected during routine diagnostics. This finding can prove problematic in diagnosis because morphologic analysis based on tightly defined measurements is the primary method used to identify the infecting species and molecular confirmation...

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Main Authors: Sarah G.H. Sapp, Michael J. Yabsley, Richard S. Bradbury
Format: Article
Language:English
Published: Centers for Disease Control and Prevention 2018-08-01
Series:Emerging Infectious Diseases
Subjects:
Online Access:https://wwwnc.cdc.gov/eid/article/24/8/18-0560_article
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author Sarah G.H. Sapp
Michael J. Yabsley
Richard S. Bradbury
author_facet Sarah G.H. Sapp
Michael J. Yabsley
Richard S. Bradbury
author_sort Sarah G.H. Sapp
collection DOAJ
description Occasionally, abnormal forms of parasitic helminth eggs are detected during routine diagnostics. This finding can prove problematic in diagnosis because morphologic analysis based on tightly defined measurements is the primary method used to identify the infecting species and molecular confirmation of species is not always feasible. We describe instances of malformed nematode eggs (primarily from members of the superfamily Ascaridoidea) from human clinical practice and experimental trials on animals. On the basis of our observations and historical literature, we propose that unusual development and morphology of nematode and trematode eggs are associated with early infection. Further observational studies and experimentation are needed to identify additional factors that might cause abnormalities in egg morphology and production. Abnormal egg morphology can be observed early in the course of infection and can confound accurate diagnosis of intestinal helminthiases.
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spelling doaj.art-edba7ddb1f5a47a2a9a9ca66d8aa46c82022-12-21T17:32:04ZengCenters for Disease Control and PreventionEmerging Infectious Diseases1080-60401080-60592018-08-012481407141110.3201/eid2408.180560Abnormal Helminth Egg Development, Strange Morphology, and the Identification of Intestinal Helminth InfectionsSarah G.H. SappMichael J. YabsleyRichard S. BradburyOccasionally, abnormal forms of parasitic helminth eggs are detected during routine diagnostics. This finding can prove problematic in diagnosis because morphologic analysis based on tightly defined measurements is the primary method used to identify the infecting species and molecular confirmation of species is not always feasible. We describe instances of malformed nematode eggs (primarily from members of the superfamily Ascaridoidea) from human clinical practice and experimental trials on animals. On the basis of our observations and historical literature, we propose that unusual development and morphology of nematode and trematode eggs are associated with early infection. Further observational studies and experimentation are needed to identify additional factors that might cause abnormalities in egg morphology and production. Abnormal egg morphology can be observed early in the course of infection and can confound accurate diagnosis of intestinal helminthiases.https://wwwnc.cdc.gov/eid/article/24/8/18-0560_articlehelminthsmorphologyAscarididaeSchistosomatidaediagnosticsegg development
spellingShingle Sarah G.H. Sapp
Michael J. Yabsley
Richard S. Bradbury
Abnormal Helminth Egg Development, Strange Morphology, and the Identification of Intestinal Helminth Infections
Emerging Infectious Diseases
helminths
morphology
Ascarididae
Schistosomatidae
diagnostics
egg development
title Abnormal Helminth Egg Development, Strange Morphology, and the Identification of Intestinal Helminth Infections
title_full Abnormal Helminth Egg Development, Strange Morphology, and the Identification of Intestinal Helminth Infections
title_fullStr Abnormal Helminth Egg Development, Strange Morphology, and the Identification of Intestinal Helminth Infections
title_full_unstemmed Abnormal Helminth Egg Development, Strange Morphology, and the Identification of Intestinal Helminth Infections
title_short Abnormal Helminth Egg Development, Strange Morphology, and the Identification of Intestinal Helminth Infections
title_sort abnormal helminth egg development strange morphology and the identification of intestinal helminth infections
topic helminths
morphology
Ascarididae
Schistosomatidae
diagnostics
egg development
url https://wwwnc.cdc.gov/eid/article/24/8/18-0560_article
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AT michaeljyabsley abnormalhelmintheggdevelopmentstrangemorphologyandtheidentificationofintestinalhelminthinfections
AT richardsbradbury abnormalhelmintheggdevelopmentstrangemorphologyandtheidentificationofintestinalhelminthinfections