Document Detail

Distribution and ecology of campylobacters in coastal plain streams (Georgia, United States of America).
MedLine Citation:
PMID:  17172457     Owner:  NLM     Status:  MEDLINE    
Campylobacter is the leading cause of bacterium-associated diarrhea in the United States and most developed countries. While this disease is considered a food-borne disease, many clinical cases cannot be linked to a food source. In rural and agrarian areas environmental transmission may be an important factor contributing to case loads. Here we investigated the waterborne prevalence of campylobacters in a mixed-use rural watershed in the coastal plain of southern Georgia (United States). Six sites representing various degrees of agricultural and human influence were surveyed biweekly to monthly for 1 year for the presence of culturable thermophilic campylobacters and other measures of water quality. Campylobacters were frequently present in agriculture- and sewage-impacted stretches of streams. The mean campylobacter counts and overall prevalence were highest downstream from a wastewater treatment plant that handled both human and poultry slaughterhouse waste (<or=595 CFU ml-1; 100% positive); the concentrations were significantly higher than those for the four upstream sites (P<0.05). The counts were significantly correlated with the number of fecal coliform bacteria, conductivity, pH, and concentrations of nutrients (NO3-, PO(4)3-, and NH3). Campylobacters were isolated more frequently and larger numbers were present during the summer months, similar to the occurrence of clinical cases of campylobacteriosis in this region. A multivariate model showed that the levels were significantly influenced by increasing precipitation, which also peaked in the summer. The results indicate that loading from both human and domestic animal waste may be high in the watershed studied during the summer months. Mixed-use watersheds supporting agriculture production, human populations, and wildlife may be at risk for contamination by campylobacters and may be an important route for human exposure.
Ethell Vereen; R Richard Lowrance; Dana J Cole; Erin K Lipp
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.     Date:  2006-12-15
Journal Detail:
Title:  Applied and environmental microbiology     Volume:  73     ISSN:  0099-2240     ISO Abbreviation:  Appl. Environ. Microbiol.     Publication Date:  2007 Mar 
Date Detail:
Created Date:  2007-02-27     Completed Date:  2007-04-10     Revised Date:  2013-06-06    
Medline Journal Info:
Nlm Unique ID:  7605801     Medline TA:  Appl Environ Microbiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1395-403     Citation Subset:  IM    
University of Georgia, Department of Environmental Health Science, 206 Environmental Health Science Bldg., Athens, GA 30602, USA.
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MeSH Terms
Campylobacter / growth & development,  isolation & purification*
Colony Count, Microbial
Rivers / microbiology*
Waste Disposal, Fluid / methods*
Water Pollution / analysis*

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