“Cleaning or disinfection and drying may remove organisms from the mattress cover, while the inner wet foam may still harbour bacteria that can ooze out when a patient lies on the mattress or the mattress is physically pressed…”

E.Creamer, H.Humphreys: The contribution of beds to healthcare-associated infection: the importance of adequate decontamination. Journal of Hospital infection, (2008) 69, 8-23