Abstract:
:A collection of Aeromonas isolates obtained over a three-year period in the same geographic area (León, NW of Spain) was characterized by (GTG)₅-PCR fingerprinting, amplified fragment length polymorphism (AFLP) analysis and gyrB gene sequence analysis. The isolates originated from human diarrheal stools (29 isolates), potable water (13 isolates), rabbit meat (13 isolates) and marine fish (5 isolates). The distribution of Aeromonas species varied with the strain source. Aeromonas caviae HG4 and Aeromonas media HG5 were predominant in clinical and water isolates, respectively, whereas motile Aeromonas salmonicida HG3 strains were most frequently found in fish and meat. Molecular typing revealed several genotypic relationships among specific isolate subsets: (i) two clones of A. media HG5 persisted in drinking water over the study period, (ii) different patients harbored identical or closely related clones during several months, and (iii) clonal relatedness was observed in two sets of water and human isolates. The first of these sets comprised nine water isolates and two human A. media HG5 isolates, whereas the other one included a water isolate and a human isolate of A. caviae HG4. The latter finding suggests that Aeromonas transmission in the studied region followed a waterborne route. Interestingly, the three human isolates closely related to water isolates were recovered in a period of four days in June 2006 from non-related patients without underlying medical conditions that tested negative for other enteric pathogens. The data imply the transmission through contaminated water of strains of the A. caviae group that can produce disease in humans.
journal_name
Int J Food Microbioljournal_title
International journal of food microbiologyauthors
Pablos M,Huys G,Cnockaert M,Rodríguez-Calleja JM,Otero A,Santos JA,García-López MLdoi
10.1016/j.ijfoodmicro.2011.04.006subject
Has Abstractpub_date
2011-06-30 00:00:00pages
203-10issue
3eissn
0168-1605issn
1879-3460pii
S0168-1605(11)00206-6journal_volume
147pub_type
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