Judy,
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
factors.
--
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.
