Does any one know alot about Staph infection or MRSA?

ok, so i no some one who had it 2 times, then i stayed at there house for a month, like 5 years later and the same kind of boil/symptom appeared on my leg. is there a chance i had it? I went away after 3 weeks w/o any drugs. And now theres a Big epidemic going on, my school is infected with it.