If I noticed what I believed to be a staph infection on my legs soon after I had also been diagnosed with strep throat and got in to see a doctor before the infected area had developed any type of opening, and I have been taking sulfamethoxazole for 4 days now and the infected area only looks like a bruise now, could I still be contagious?
Hello, THX to contact us. If I am your treating doctor I would like to advice you that taking the Chat Doctor.  You will be contagious if you have infection previously and not completely treated. If you have to check for contagiousness I advise you to do Grams stain form the lesion. If you find negative result for the Grams staining you are not contagious. If you have anything else to ask please contact me. Than. Chat Doctor