Alabama health officials say they've confirmed the first travel-related case of the Zika virus in the state. The Alabama Department of Public Health issued a statement today saying a resident of Morgan County in the Tennessee Valley tested positive for the virus. The Zika virus spreads through a certain type of mosquito. It moved quickly through Latin America before showing up in the United States, most often in people who have traveled. Federal and state officials say cases of the virus have been confirmed in 12 states and the District of Columbia. The virus is suspected of causing a defect in which babies are born with abnormally small heads. Acting State Health Officer Tom Miller says more cases probably will show up in Alabama.