stokes is referring to is sometimes the drug companies comen and market a really god drug, one -- a reallyood drug that is good for serious infections but they market it so the physicians who rely on that information might use it for something that is really what we call overkill. you don't really need that antibiotic. host: next call for dr. fauci is new york city, annette. caller: good morng, c-span, and dr. fai. i work in a public hospita in new york and i'm a nurse at home. the patients are swamped for mrsa. is it true most healthcare workers carry these organisms because they are exposed? guest: i'm not sure that is the reason why they may not. itarieses from hospital to hospital. some are tested pticularly when there is the suspicion or history of outbreaks in a particular facility like a nursing home. but you are correct. when you have hospitals, nursing homes and long-term care facilities, that is one of the post problematic areas in the sense that we have seen outbreaks of resistant microbes in those particular facilities. there's been a history the past couple of years of outbrea