study questions a.k.a things I should know by now

[nilla_wafer]

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hi..

I occasionally have brain farts (maybe others do too, i hope).

here is a quick question which I need a quick answer for:

how is the treatment different for typical vs. atypical pneumonia?
What I seem to find on the ID Society's guidelines does not specify the type of pathogen, but just throws either azithromycin or doxy at it, or "advances" treatment to a fluoroquinolone or b-lactam+macrolide.

Is this true for typical AND atypical pathogens? Then why do we bother classifying them??