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Bacitracin and Group A Streps

John Gentile yjgent at home.com
Tue Jul 31 21:06:28 EST 2001

    Actually we see quite a few of them since we use Columbia with 5% Horse
Blood Agar as our primary blood plate. Many Enterococcus feacalis are Gamma
or Alpha hemolytic on Sheep Blood, but show a nice Beta hemolysis on Horse.
    Horse is also good for growing Haemophilus without additional growth

John Gentile                                    Rhode Island Apple Group
yjgent at home.com                                      President
 "I never make mistakes, I only have unexpected learning opportunities"

> From: Dilworth <bactitech at hortonsbay.com>
> Organization: Infinite Systems - Columbus, OH
> Newsgroups: bionet.microbiology
> Date: Tue, 31 Jul 2001 16:59:46 -0400
> Subject: Re: Bacitracin and Group A Streps
> .....and beta hemolytic enterococci DO exist!  You don't see them very
> often, but they are out there.
> Thanks John!
> Judy Dilworth, M.T. (ASCP)
> Microbiology
> John Gentile wrote:
>> I think I would trust the latex as being more specific for Group A where the
>> PYR could be positive by other organisms - especially a beta hemolytic
>> Enterococcus.

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