TUCSON, Ariz. (AP) -- Tucson health officials say a coordinated county, state and federal response to a measles outbreak in southern Arizona succeeded in curtailing what potentially could have been more than 22 cases at most.

Officials in Pima County haven't officially declared the outbreak over, but containment is at hand.

The initial case was identified in February.

The patient was a woman visiting from Switzerland who showed up twice at a hospital emergency room, the first time without the telltale measles rash.

Once she was diagnosed, authorities moved quickly to isolate her so that the air she breathed was not recirculated inside the hospital, since measles is an airborne infectious disease.

The next step was identifying whether the hospital's health care personnel were immune to measles, and then tracking all contacts that the patient had with other people during her visit.

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