(Photo by Tracy Greer - KJZZ)

Zika awareness poster created by the Georgia Department of Public Health.

Last year, the Centers for Disease Control added Mexico to its list of countries that have active Zika virus transmission. Most of the cases were in southern Mexico, but as of last month that changed.

The Arizona Department of Health learned there were a handful of locally-acquired Zika cases in the Mexican state of Sonora, which is on the other side of the Arizona border.

"There were some newspaper articles that came out about September 22 or so and we used that information to notify healthcare providers in the state that they should be aware of this if they’re evaluating patients who have frequent travel across the border to Mexico that maybe they should be suspecting Zika or consider testing," said Jessica Rigler is with DHS.

Rigler said the outbreak in Sonora is fizzling out. She said there are now 42 confirmed cases of travel-related Zika in Arizona.