Andy yruNOSPAM at mindless.com
Tue Jul 14 06:58:55 EST 1998

Glen (and others)
Thanks for your reply!
I should have made my question more specific.
I am well aware that any bacteria in CSF is significant (barring
However, what I need to know is that when a patient has a bacterial
meningitis, what level of bacteria would one expect to find!
It appears that this question has not been answered in many text books as any
quantity is considered significant!
Does anyone know the answer?
I remember looking at CSF and sometimes one could see on a wet prep bacteria!
So the number can be significant! However, that may just be some cases.
Are there bacterial meningitis cases where bacteria would be virtually
undetectable by microscopy?


Glen Tamura wrote:

> Andy:
> This isn't really an answer to your question, as I don't know what the
> average cfu/ml are in meningitis. However, CSF is a normally sterile body
> fluid, so ANY growth is considered pathologic. Occasionally samples will
> be contaminated with skin organisms, but the determination of whether it
> is significant or not is made upon the nature of the isolate, rather than
> the cfu/ml. One cfu/ml of Streptococcus pneumoniae is considered
> significant. 100cfu/ml of Staphylcoccus epidermidis is usually considered
> insignificant, unless the patient has some reason to have S. epidermidis
> in their CSF.
> Glen Tamura
> On Mon, 13 Jul 1998, Andy wrote:
> > Can anyone help me here?
> > "what is a typical concentration of bacteria expected if bacterial
> > meningitis is expected, in C.F.U. / ml"
> >
> > Andy
> >
> >
> >

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