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SIERRA VISTA, Ariz. (AP) — Cochise County has confirmed three travel-related cases of the Zika virus.
Health officials say the three county residents had recently returned from a trip to Puerto Rico.
That's one of 38 countries subject to Zika-related travel health notices issued by the U.S. Centers for Disease Control and Prevention.
The three affected travelers experienced mild symptoms of illness and have since recovered.
The Zika virus is primarily spread through the bite of a mosquito.
Cochise Health and Social Services staff routinely monitors mosquito activity from July through October.
That involves trapping mosquitoes from points throughout the county and testing for a variety of mosquito-borne viruses.
So far this year, mosquito trapping has yielded no positive results for any vector-borne diseases.
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