RESULTS	The study had the following limitations : the requirement for culture at baseline likely skewed the enrollment of patients towards those with abscesses ; the results of culture in patients with USSSIs are often nonspecific ; in some patients entering the study with a diagnosis of cellulitis , the cellulitis was associated with an abscess ; and , incision and drainage ( I&D ) , spontaneous drainage , and needle aspiration are likely to have contributed to clinical response for purulent infections , and in particular MRSA-associated infections .\