Journal article
Occurrence of Potentially Human Pathogenic Vibrio Species in the Coastal Water of the Eastern Province of Saudi Arabia

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Publication Details
Author list: N. Elhadi
Publisher: Academic Journals Inc
Publication year: 2013
Journal: Research Journal of Microbiology
Journal name in source: Research Journal of Microbiology
Volume number: 8
Issue number: 1
Start page: 1
End page: 12
Number of pages: 12
ISSN: 1816-4935
Web of Science ID:
PubMed ID:
Scopus ID: 84878318125

Non-cholera Vibrio infections are an important public health problem worldwide. The aim of this study was to investigate the presence of potentially pathogenic non-cholera Vibrio species in coastal seawater of Eastern Province of Saudi Arabia. A total of 300 seawater samples were collected from five locations along coast environment and examined for the presence or absence of pathogenic Vibrio species during eleven months between February and December, 2010. In this study five potentially pathogenic Vibrio species were detected, with overall incidence in the samples being at 38% for V. alginolyticus was the predominant species, 13.3 % for V. parahaemolytieus, 7.6% for V. vulnifieus, 5.6% for V. eholerae non-O/non-0139 and 0.33 % for V. mimicus. All isolates of V. eholerae non-O/non-0139 were negative for cholera toxin (ctx) gene and only three isolates were positive for toxin-coregulated pilus gene (tepA) out of 27 isolates. From the results of this study, coastal water of Arabian Gulf is concluded to be a reservoir for Vibrio species in Eastern Province of Saudi Arabia. To the best of our knowledge, this is the first study done on determining potentially pathogenic Vibrio in the Saudi Arabia and Arabian Gulf region. As the study has found that pathogenic Vibrio species are present in the study area, it is recommended that the possibility of infection caused by non cholera Vibrio should be considered whenever diagnosis is done on any patient who had recently been exposed to sea water or that had manipulated or consumed seafood and presenting infected wounds, ear infection, conjunctivitis, gastroenteritis or septic shock.
Key words: Vibrio species, seawater, arabian gulf, eastern province of Saudi Arabia
INTRODUCTION Ample studies have shown that Vibrio species are highly abundant in aquatic environments, including estuaries, marine coastal waters and sediments and aquaculture settings worldwide (Ortigosa et al., 1989; Barbieri et al., 1999; Heidelberg et al., 2002). Members of Vibrios are classified as Gram-negative, curved and rod-shaped bacteria. They are known to be ubiquitous bacteria; they naturally habituate of the estuarine and marine environments and are commonly present in or on shellfish and other seafood (Farmer and Hickman-Brenner, 1992). The genus Vibrio includes more than 35 currently recognized species, 12 of which are considered to be human pathogens. V. eholerae, V. parahaemolytieus and V. vulnifieus are universally recognized as the major significant human pathogens. On the contrary, V. mimicus, V. hollisae, V. alginolyticus, V. fluualis, V. furnissi, V. metschnikouii, V. earehariae, V. cineinnatiensis and V. damsela, considered to be responsible for cases for minor pathogenicity, are usually or frequently isolated from blood, wounds of arms and legs, infected eyes and ears (Farmer and Hickman-Brenner, 1992). The linkages between the estuarine environment and human disease are common among Vibrios, with each species having distinctive features (Janda et al., 1988).

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Last updated on 2019-09-10 at 15:14