Measles is a highly contagious airborne disease, and the best immediate action in an outpatient clinic without an Airborne Infection Isolation Room (AIIR) is to mask the patient and isolate them in a private room with the door closed.
Why the Other Options Are Incorrect?
* A. Patient should be sent home - While home isolation may be necessary, sending the patient home without proper precautions increases exposure risk.
* B. Staff should don a respirator, gown, and face shield - While N95 respirators are necessary for staff, this does not address patient containment.
* C. Patient should be offered the MMR vaccine - The vaccine does not treat active measles infection and should be given only as post-exposure prophylaxis to susceptible contacts.
CBIC Infection Control Reference
Measles cases in outpatient settings require immediate airborne precautions to prevent transmission.