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Bacitracin and Group A Streps

Patrick Druggan Patrick.Druggan at btinternet.com
Sun Jul 29 07:08:42 EST 2001

I've got a question for the clinicians out there. I'm a food microbiologist,
so I apoligise if this is a stupid question.

I've read some papers from the mid-80s on the use of PYR as a more specific
alternative to the bacitracin suseptibility test for presumptive
identification of Group A streptococci.

Did the PYR test displace the bacitracin suseptibility test, or is the
method used dependant on the lab carrying out the identification?


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