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How long do Transmission-Based Precautions stay in effect?
AUntil the patient is discharged from the facility
BUntil the treating physician orders a final culture
CFor a fixed seven days from the day they start
DWhile the risk of transmission of the agent persists
Answer & Solution
Correct answer: D. While the risk of transmission of the agent persists
1. These precautions run for limited periods, not for the whole admission.
2. The period lasts while the risk of transmission of the agent persists, or for the duration of the illness.
3. For most diseases that duration follows the known pattern of shedding and the effect of treatment.
4. Some diseases end precautions only once tests document that the pathogen is gone, so no fixed number of days fits every case.
_Source: CDC Guideline for Isolation Precautions: Preventing Transmission of Infectious Agents in Healthcare Settings (2007), Part III, section III.D. Discontinuation of Transmission-Based Precautions_
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