Measles, a disease declared eliminated in the United States in 2000, is once again generating headlines — and dental and medical offices should be paying attention.
According to the CDC, as of July 23, 2026, 2,318 confirmed measles cases had been reported in the United States for the year, spanning 45 jurisdictions. That already exceeds the 2,289 confirmed cases reported for the entirety of 2025. Notably, the vast majority of this year's cases — 93% — are outbreak-associated rather than isolated travel-related incidents, meaning community transmission is actively driving the numbers up.
State-level data tells a similar story. In California, as of July 27, 2026, there had been 53 confirmed measles cases reported for the year, following public health advisories urging vaccination as cases rose across multiple counties earlier in 2026. Outbreaks tied to lower vaccination coverage in specific communities continue to pop up around the country, even though high population-level immunity generally keeps transmission contained.
Why This Matters for Dental and Medical Practices
Measles is exceptionally contagious. Public health guidance notes that the virus spreads through speaking, coughing, sneezing, or breathing, and can linger in the air for up to two hours after an infected person has left a room. For unvaccinated individuals exposed to the virus, the likelihood of contracting the disease is roughly 90%. That combination — airborne transmission plus a long window of environmental persistence — makes waiting rooms, operatories, and shared HVAC spaces genuine points of concern.
The American Dental Association has been direct about what this means operationally. Practices are advised to build measles preparedness into standard protocols, including confirming that staff records and staff immunizations are up to date as part of routine infection control procedures. Staff without documented immunity may need post-exposure management guidance if a suspected case walks through the door.
Practical Steps for Front-Desk and Clinical Teams
- Confirm MMR immunization status is documented for all clinical and administrative staff.
- Train front-desk teams to ask about fever, rash, and recent travel or known exposure before a patient is brought into a shared clinical space.
- Establish a protocol for isolating a suspected case immediately, ideally in a room with a closed door away from other patients, rather than in an open waiting area.
- Reinforce respiratory protection procedures for staff who may need to interact with a suspected case before it can be confirmed or ruled out, since standard surgical masks do not provide the same filtration as fit-tested respirators for airborne pathogens.
- Stay current with your state and local health department bulletins, since outbreak activity is highly localized and can shift quickly.
Measles remains rare in any individual practice's day-to-day experience, and most offices will never see a confirmed case. But with case counts trending upward nationally and new localized outbreaks appearing throughout 2026, now is a reasonable time to revisit staff immunization records, refresh front-desk screening scripts, and make sure isolation and respiratory protection protocols are ready if they're ever needed.