Different abundance and correlational patterns exist between total and presumed pathogenic Vibrio vulnificus and V. parahaemolyticus in shellfish and waters along the North Carolina coast

FEMS Microbiology Ecology
Tiffany C WilliamsJames D Oliver

Abstract

Monitoring of Vibrio vulnificus and V. parahaemolyticus abundance is pertinent due to the ability of these species to cause disease in humans through aquatic vectors. Previously, we performed a multiyear investigation tracking Vibrio spp. levels in five sites along the southeastern North Carolina coast. From February 2013 to October 2015, total V. vulnificus and V. parahaemolyticus abundance was measured in water, oysters and clams. In the current study, pathogenic subpopulations were identified in these isolates using molecular markers, revealing that 5.3% of V. vulnificus isolates possessed the virulence-correlated gene (vcgC), and 1.9% of V. parahaemolyticus isolates harbored one or both of the virulence-associated hemolysin genes (tdh and trh). Total V. parahaemolyticus abundance was not sufficient to predict the abundance of pathogenic subpopulations. Specifically, pathogenic V. parahaemolyticus isolates were more often isolated in cooler waters and were sometimes isolated when no other V. parahaemolyticus strains were detectable. Vibrio vulnificus clinical (C-) genotypes correlated with total V. vulnificus; however, salinity, water depth and total suspended solids influenced C- and E-genotypes differently. Lastly, we docu...Continue Reading

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Citations

Mar 3, 2019·Applied and Environmental Microbiology·Jinchang LiangXiao-Hua Zhang
May 5, 2020·Environmental Microbiology·Delphine Destoumieux-GarzónLuigi Vezzulli
Jul 22, 2019·European Journal of Clinical Microbiology & Infectious Diseases : Official Publication of the European Society of Clinical Microbiology·Fei LengMing Zhong
Nov 23, 2020·Water Research·Peyman Namadi, Zhiqiang Deng
Dec 18, 2020·Comprehensive Reviews in Food Science and Food Safety·Nodali NdrahaHsin-I Hsiao
Mar 16, 2021·Frontiers in Cellular and Infection Microbiology·Keri A LydonJessica L Jones

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