Based on spaudling classification the critical items and semi critical items need to be sterilized before being used for the safety of the patients that will touch the patient sterile body cavity so all microorganisms need to be destroyed to prevent diseases associated with the items used , to achieve this target we have to use sterilizers that can be high temperature sterilizer or low temperature sterilizers the widely used High temp sterilizers are steam sterilizer and the flash sterilizers (as long as most instrument are heat stable)
Varicella vaccination Safety and Effectiveness
It is a highly infectious disease caused by Varicella-Zoster Virus (VZV) that transmitted from person to person by close contact, breath of aerosols of vesicular fluid of skin lesions of varicella or herpes zoster (HZ), either it can cause localized, painful vesicular rash commonly which is called shingles, or infected respiratory tract secretions that also might be aerosolized again to cause infection. The incubation period is almost 14–16 days after exposure to rash appear (range: 10–21 days). Infected persons are contagious an estimated 1–2 days before rash onset until all lesions are crusted, typically 4–7 days after rash onset. Usually lifetime immunity achieved by primary infection with VZV.
Release of disease by flexible endoscopy
Flexible endoscopic procedures are used for diagnostic (i.e., visualization and sample collection) as well as therapeutic purposes for lungs, the esophagus, stomach and intestine , the biliary tract and pancreas , or the large bowel . Also, included are new modalities that continue to develop and evolve such as combined ultrasound transduodenoscopy, that gives endoscopic ultrasound to endoscopy .