The state of Florida has added aerial spraying to its efforts to contain the spread of the Zika virus from the neighborhood where mosquitoes are carrying the virus. U.S. officials say they are taking Zika seriously as it is the first mosquito borne virus that can cause a birth defect. The U.S. Centers for Disease Control (CDC) has sent experts to the southern state to help track Zika developments. Zlatica Hoke has more.