Question

Portable UV room sterilizing units are being used to reduce endospores of  Clostridioides difficile in hospital rooms after patients have vacated. Which of the statements best describes this application?

		UV radiation will not destroy C. difficile endospores.
		UV radiation will destroy C. difficile endospores assuming it is applied for a long enough period and directly contacts all surfaces.
		UV radiation will destroy C. difficile endospores and penetrates well to all locations within the room.
		UV radiation will destroy C. difficile endospores and has residual sporicidal effects that will persist after the unit has been removed from the patient's room.

Answer 1

Ans: UV radiation will not destroy C. difficile endospores.

Explanation: UV radiation is not able to destroy the endospores of c.difficile because it can be survive without taking nutrition. The DNA of endospores are protected by the small molecule of protein which is bind to DNA and protect the endospores from photochemical damaging. Endospores can be survive in extreme high temperature or extreme low temperature. But some non ionizing radiation inactivate the endospores but not able to destroy.