Cited by 181Helminth infection and controlParasitic infections in humans and animalsParasitic Infections and Diagnostics

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Endoparasite prevalence and recurrence across different age groups of dogs and cats

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Gates, Maureen C., Nolan, Thomas J.·2009·Veterinary Parasitology

DOI 10.1016/j.vetpar.2009.07.041PMC PMC2783654

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Abstract

The apparent prevalence of endoparasite infections across different age groups was calculated from 6555 dogs and 1566 cats that had a fecal examination performed upon presentation to the Veterinary Hospital of the University of Pennsylvania between 1997 and 2007. Based on notations from the medical history indicating prior parasite infections, estimates of recurrence were generated for each common group of parasites, including Trichuris, Giardia, ascarids, hookworms, Cystoisospora, and tapeworms. Endoparasitism was predominantly a disease of younger animals, with peak prevalence observed almost uniformly in dogs under 6 months old, with the exception of Trichuris with its longer pre-patent period, and in cats less than 18 months old. Furthermore, nearly 50% of dogs under 6 months old with a history of parasites, were diagnosed with at least one species of parasite on subsequent fecal examination. The percentage dropped to 18.4% in animals aged 1-4 years, but again increased to 31.5% in animals over 10 years old. There was no reported recurrence of Giardia or Cystoisospora from canine or feline patients older than 1 year. The recurrence of whipworm rose steadily with age, while hookworm and roundworm recurrence peaked in patients 1-4 years old. Findings from the study emphasize the importance of follow up fecal examinations and treatments in patients diagnosed with endoparasites.

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Immune System Development in the Dog and Cat
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“…with parasite recurrence is that the immune system of very young dogs is unable to generate long term immunity to the parasites during development, while the immune system of older animals may begin to lose anamnestic responses against previously seen parasites (Day, 2007; Muirhead et al., 2008).”
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Additional file 4 of Retrospective analysis of feline intestinal parasites: trends in testing positivity by age, USA geographical region and reason for veterinary visit
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Additional file 2 of Retrospective analysis of feline intestinal parasites: trends in testing positivity by age, USA geographical region and reason for veterinary visit
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Authors: Gates, M. C., & Nolan, T. J.
Affiliations: University of Pennsylvania (US)
Corresponding author: Nolan, Thomas J.
ORCID: Gates, Maureen C.
Nolan, Thomas J.
Venue: Veterinary Parasitology
Publisher: Elsevier BV
Published: 2009-12
Volume: 166
Issue: 1-2
Pages: 153-158
ISSN: 0304-4017 (ISSN-L)
DOI: 10.1016/j.vetpar.2009.07.041
PMC: PMC2783654
OpenAlex: W2013695084
Cited by: 181
References: 17
Citations by year: 2026: 4 · 2025: 11 · 2024: 11 · 2023: 11 · 2022: 13 · 2021: 12 · 2020: 15 · 2019: 9 · 2018: 15 · 2017: 10 · 2016: 7 · 2015: 12 · 2014: 16 · 2013: 6 · 2012: 12
FWCI: 15.05
Type: journal article
Language: en
Open access: green
www.ncbi.nlm.nih.gov
Licence: www.elsevier.com/tdm/userlicense/1.0/ (tdm)
Locations: Veterinary Parasitology (publishedVersion)
PubMed (publishedVersion)
Europe PMC (PubMed Central) (acceptedVersion)
PubMed Central (acceptedVersion)
Funders: National Institutes of Health
National Center for Research Resources (RR 07065, T35RR007065)
Topics: Life Sciences › Immunology and Microbiology › Parasitology › Helminth infection and control
Life Sciences › Immunology and Microbiology › Parasitology › Parasitic infections in humans and animals
Life Sciences › Immunology and Microbiology › Parasitology › Parasitic Infections and Diagnostics
Keywords: endoparasites, parasite prevalence, dogs, cats, age-related infection risk, Trichuris, Giardia, ascarids, hookworm, Cystoisospora, cestodes, Trichuris trichiura, fecal analysis, prepatent period
MeSH terms: Age Factors, Animals, Cat Diseases, Cats, Dog Diseases, Dogs, Parasitic Diseases, Animal, Pennsylvania, Recurrence, Prevalence

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Endoparasite prevalence and recurrence across different age groups of dogs and cats

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