Drainage and the color of it.....

green drainage often means pseudomonas

I agree...very bright green, almost a lime green is usually pseudomonas. As far as I know, a wound can be treated with atb therapy and have a negative culture for mrsa once treated.

Unfortunately MRSA tends to come back. It often will clear in a specific wound but then may show up again as an absess someplace else. Also, like most staph, it tends to colonize in the nares, throat, skin folds, etc. Colonization can be transient or permanent. See the www.cdc.gov or go to www.apic.org and put MRSA in the search box.