Types of disinfection

Types of disinfection:

(a) Concurrent disinfection: It is the application of disinfective measures as soon as possible after the discharge of infectious material from the body of an infected person, or after the soiling of articles with such infectious discharges. In other words, the disease agent is destroyed as soon as it is released from the body, and in this way further spread of the agent is stopped. Concurrent disinfection consists of usually disinfection of urine, faeces, vomit, contaminated linen, clothes, hands, dressings, aprons, gloves, etc throughout the course of an illness.

(b) Terminal disinfection: It is the application of disinfective measures after the patient has been removed by death or to a hospital or has ceased to be a source of infection or after other hospital isolation practices have been discontinued. Terminal disinfection is now scarcely practised; terminal cleaning is considered adequate, along with airing and sunning of rooms, furniture and bedding.

(c) Precurrent (prophylactic) disinfection : Disinfection of water by chlorine, pasteurization of milk and handwashing may be cited as examples of precurrent disinfection.

Hence disinfection of artery forceps after the surgery will be an example of concurrent disinfection, as it is disinfected immediately post-surgery and is soiled with the blood/tissues of the patient.

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