To save on personnel costs, hospitals outsource cleaning and laundry services and employ fewer nursing staff. Consequently, patients are looked after by healthcare assistants who move from room to room and hospital to hospital. Under such circumstances, infection foci are difficult to locate and contain.
為了精簡人事，醫院把清潔、洗衣工作外包，護理人員又用得少，一般民眾家中若有人住院，只好請看護工照料，而看護工從來不會只待在一個病房、一家醫院，一旦變成感染源，後果難以收拾。