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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Prevalence of enterotoxigenic Escherichia coli virulence genes from scouring piglets in Zimbabwe
Tropical Animal Health and Production, Volume 41, No. 7, Year 2009
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Description
World-wide, enterotoxigenic Escherichia coli (ETEC) and verotoxigenic E. coli (VTEC)-induced diarrhea are economically important for porcine producers. Our aim was to investigate the prevalence of toxin and fimbrial genes among E. coli isolated from diarrheic piglets from randomly selected piggeries in Zimbabwe.We used multiplex PCR for screening STa, STb, LT, and Stx-2e toxins. Subsequently F4, F5, F6, F18 and F41 fimbriae genes were screened in toxin positive isolates. Toxin positive strains lacking tested fimbriae genes were characterized using transmission electron microscopy, agglutination and agglutination inhibition tests. Approximately 32% of the 1,984 isolates tested positive for STa, STb, LT or Stx-2e genes. Of these, approximately 81% had F4, F5, F6, F18 or F41 fimbriae genes. The remaining toxin positive strains lacked tested fimbriae genes and appeared to either express F1-like fimbriae, or lacked fimbriae. The data constitute an important framework for implementation of prevention measures, such as using relevant fimbriae-based vaccines against ETEC induced diarrhea or VTEC-induced edema. © Springer Science+Business Media B.V 2009.
Authors & Co-Authors
Madoroba, Evelyn
South Africa, Pretoria
University of Pretoria
van Driessche, Edilbert
Belgium, Brussels
Vrije Universiteit Brussel
de Greve, Henri
Belgium, Brussels
Vrije Universiteit Brussel
Mast, Jan
Belgium, Brussels
Belgian National Institute for Veterinary Research
Ncube, Ignatious
South Africa, Sovenga
University of Limpopo
Read, John S.
Zimbabwe, Bulawayo
National University of Science and Technology Bulawayo
Beeckmans, Sonia
Belgium, Brussels
Vrije Universiteit Brussel
Statistics
Citations: 34
Authors: 7
Affiliations: 5
Identifiers
Doi:
10.1007/s11250-009-9345-4
ISSN:
00494747
e-ISSN:
15737438
Study Design
Cross Sectional Study
Study Locations
Zimbabwe