RESULTS	With regard the containers used in the in-patient setting , 2 ( 14.3 % ) became contaminated after 2 weeks , 5 ( 35.7 % ) became contaminated after 3 weeks , and 5 ( 50 % ) became contaminated after 4 weeks , leaving 7 ( 50 % ) that did not become contaminated after 1 month of treatment .\