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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
medicine
Diagnosis of vibrio cholerae o1 infection in Africa
Journal of Infectious Diseases, Volume 208, No. SUPPL. 1, Year 2013
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Description
Isolation of Vibrio cholerae O1 is necessary for cholera outbreak confirmation. Rapid diagnostic testing of fecal specimens, based on lipopolysaccharide detection of V. cholerae O1 or O139, may assist in early outbreak detection and surveillance. Cary-Blair transport medium is recommended for specimen transport. Filter paper, although used in epidemics, needs evaluation against rectal swab specimens. Fecal specimens are subcultured onto selective and nonselective media, including 5% blood agar and TCBS agar, for detection of V. cholerae O1 or O139. Suspicious, oxidase-positive isolates are serotyped in monovalent antisera. Antimicrobial-susceptibility testing is performed to detect resistance. Molecular characterization supports phenotypic identification and outbreak investigations. The presence of genes encoding cholera toxin, lipopolysaccharide, and El Tor biotype traits can be confirmed. Standardized pulsed-field gel electrophoresis analysis facilitates strain comparison. Quality management ensures reliability of results through validation and verification of functional laboratory equipment; quality control of testing procedures, laboratory reagents, and consumables; and participation in proficiency-testing schemes. © 2013 The Author.
Authors & Co-Authors
Keddy, Karen Helena
South Africa, Johannesburg
National Institute for Communicable Diseases
South Africa, Johannesburg
University of the Witwatersrand
Sooka, Arvinda
South Africa, Johannesburg
National Institute for Communicable Diseases
Parsons, Michele B.
United States, Atlanta
Centers for Disease Control and Prevention
Njanpop-Lafourcade, Berthe Marie
France, Paris
Agence de Médecine Préventive
Fitchet, Kaye
United States
National Health Laboratory Service
Smith, Anthony Marius
South Africa, Johannesburg
National Institute for Communicable Diseases
South Africa, Johannesburg
University of the Witwatersrand
Statistics
Citations: 35
Authors: 6
Affiliations: 5
Identifiers
Doi:
10.1093/infdis/jit196
ISSN:
00221899
Research Areas
Infectious Diseases