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e coli sediment survival and virulence



 

?DNA fingerprint analyses indicated that some E. coli strains may be naturalized, and autochthonous members of the microbial community in the beach sand and sediments were examined. However, multiplex PCR results indicated that <1% of the E. coli strains at the DBC was potentially pathogenic?

 

How is the potential pathogenicity of e coli surviving in sediments determined?  I was not aware you could test sediment dwelling bacteria for pathogenicity.

Some of the literature says that virulence is an advantage for microbes surviving in secondary environments, other papers say that since the gene for virulence takes extra energy, it?s a disadvantage for survival.  Looking forward to the day when we know whether bacteria coming out of a sewage outfall are more pathogenic than the subset bacterial species that have adapted to sediment survival. Thanks for this forum its very good.

 

Thanks
 
William Simmons
Environmental Health Coordinator
Monmouth County Health Dept
3435 Rt. 9
Freehold N.J. 07748
Phone (732)431-7456
Fax  (732)409-7579
wsimmons@co.monmouth.nj.us

 

 


From: owner-beachnet@great-lakes.net [mailto:owner-beachnet@great-lakes.net] On Behalf Of Richard L Whitman
Sent: Friday, April 06, 2007 2:10 PM
To: beachnet@great-lakes.net
Subject: New Publication

 


Congratulations Satoshi et al.!

Ishii, S., D. L. Hansen, R. E. Hicks, and M. J. Sadowsky. 2007. Beach sand
and sediments are temporal sinks and sources of Escherichia coli in Lake
Superior
. Environ. Sci. Technol. 41:2203-2209.

http://pubs.acs.org/cgi-bin/abstract.cgi/esthag/2007/41/i07/abs/es0623156.html