| Role of adult sheep in transmission of infection by Cryptosporidium parvum to lambs: confirmation of periparturient rise. | |
| | |
MedLine Citation:
|
PMID: 10576577 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
In sheep farms, oocyst shedding by asymptomatic adult carriers is one of the mechanisms which may explain maintenance of infections by Cryptosporidium parvum between lambing periods. The objective of this work was to investigate this hypothesis and the existence of a periparturient rise in oocyst shedding. Fourteen pregnant sheep were randomly selected from two farms with a history of neonatal diarrhoea caused by C. parvum and samples were collected from the 6th week before birth until 2 weeks after birth. Faecal samples were filtered, concentrated and examined for oocysts using an indirect immunofluorescence assay. The kinetics of anti-C. parvum antibodies (IgG and IgA) were studied using an indirect enzyme-linked immunosorbent assay. All except one animal excreted C. parrum oocysts at some time during the experimental period. The percentage of animals passing oocysts increased in the first week post-partum (farm 1) and in the first week before birth (farm 2). The numbers of oocysts excreted ranged from 20-440 oocysts g(-1) of faeces. In contrast, no significant changes in the anti-C. parvum immunoglobulin levels were observed over the sampling period. Finally, a high percentage of lambs (71%) born to these ewes acquired infection in the first 2 weeks of life. |
| | |
Authors:
|
L M Ortega-Mora; J A Requejo-Fernández; M Pilar-Izquierdo; J Pereira-Bueno |
Related Documents
:
|
7070887 - Urinary tract infections in young infants. 17006527 - Successful treatment with oral valganciclovir in immunocompetent infant with gastrointe... 1640557 - Pyelonephritis in male infants: how important is the foreskin? 11774017 - Neonatal varicella. 10891827 - Placental transfer and decay of varicella-zoster virus antibodies in preterm infants. 23153897 - The effect of immediate postpartum depot medroxyprogesterone on early breastfeeding ces... |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: International journal for parasitology Volume: 29 ISSN: 0020-7519 ISO Abbreviation: Int. J. Parasitol. Publication Date: 1999 Aug |
Date Detail:
|
Created Date: 2000-01-05 Completed Date: 2000-01-05 Revised Date: 2003-11-14 |
Medline Journal Info:
|
Nlm Unique ID: 0314024 Medline TA: Int J Parasitol Country: ENGLAND |
Other Details:
|
Languages: eng Pagination: 1261-8 Citation Subset: IM |
Affiliation:
|
Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad Complutense de Madrid, Spain. luisucm@eucmax.sim.ucm.es |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Animals Animals, Newborn Antibodies, Protozoan / blood Cryptosporidiosis / parasitology, transmission, veterinary* Cryptosporidium parvum / isolation & purification Feces / parasitology Female Immunoglobulin A / blood Immunoglobulin G / blood Labor, Obstetric Parasite Egg Count Pregnancy Pregnancy Complications, Parasitic / parasitology, veterinary* Sheep Sheep Diseases / parasitology, transmission* |
| Chemical | |
Reg. No./Substance:
|
0/Antibodies, Protozoan; 0/Immunoglobulin A; 0/Immunoglobulin G |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Ultrastructure, fractionation and biochemical analysis of Cryptosporidium parvum sporozoites.
Next Document: A review of the importance of cryptosporidiosis in farm animals.