08/31/2026
Infection Prevention & Control
Guidance for health care professionals to prepare the clinical office for a patient with suspected measles.
Immediately report all suspected measles cases to your local health department or the Missouri Department of Health and Senior Services (DHSS). Do not wait for lab results to be returned.
Local Public Health Agencies [directory] or DHSS Emergency/Disease Reporting (24/7) 1-800-392-0272
Preparation Checklist
Immunity: All health care workers should have documented immunity to measles or two documented doses of MMR. Only staff immune to measles should provide care. For patients, immunity is considered to be two documented doses of MMR vaccine or born before 1957or having a documented measles infection. Patients vaccinated between 1963-1967 and are unsure of vaccine type, should be considered unvaccinated.
Screening: Screen patients over the phone for signs/symptoms of measles at the time of booking an appointment. Make efforts to arrange appointments for symptomatic patients at the end of the day when there are no other patients present.
PPE: Ensure N95 masks are available for staff and that staff has been fit-tested. All health care providers regardless of presumptive immunity to measles are to wear appropriate PPE when providing care to clients with suspect or confirmed measles. Establish an area to don and doff PPE (mask, gowns, gloves, and eye protection) away from other patients and staff. To avoid contamination with clean PPE, place clean PPE at a distance of 6 feet away from the doffing area.
Testing: Ensure your office has testing specimen containers, supplies, and requisitions for testing all 3 measles tests: Nasopharyngeal Swab/Throat Swab, Urine. Check expiry dates of specimen kits. Please consult with your local public health agency or DHSS prior to collecting samples.
Cleaning: Ensure you have an appropriate disinfectant to clean the office space, exam rooms, and shared
medical equipment.
Steps for Patients Visiting a Clinical Office
1. If the patient has not arrived at clinic, route the patient to a mobile unit, or even through a pre-established secondary entrance to avoid consequential exposure.
2. If the patient is already inside clinic, quickly triage patients out of common waiting areas and move symptomatic patients to an exam room. Isolate suspected or confirmed cases of measles immediately into a single room with the door closed. Provide a medical mask for the patient to wear at all times.
**Note: The preferred placement for patients who require airborne precautions is in a single-patient airborne infection isolation room (AIIR) or negative air pressure room. To prevent possible exposure of measles, the patient should remain completely isolated from other patients, and the exam room should not be used for 2 hours after the patient has departed.
3. If possible, have the symptomatic patient enter and exit through a separate entrance and enter and exit the exam room directly.
4. Clinicians should consider measles in patients presenting with non-specific signs and symptoms (fever, cough, runny nose, and conjunctivitis), especially if they are unvaccinated, partially vaccinated, or immunocompromised and there is a potential exposure risk, including recent travel. https://www.cdc.gov/infection-control/hcp/ measles/index.html
5. If you are referring a patient for diagnostic testing, the receiving facility (e.g., lab or hospital emergency department) must be notified before arrival of the patient, to allow for proper IPAC measures.
6. Clean the exam room and other common areas after the patient has left the office. Consider how you will notify exposed patients, if necessary.
August 2026
Access guidelines and resources for infection control in healthcare settings.