MIAMI/CHICAGO, Dhu-AlQa'dah 17, 1437, Aug 20, 2016, SPA -- Federal health officials on Friday warned pregnant women not to travel to trendy Miami Beach after Florida confirmed that the mosquito-borne Zika virus was active in the popular tourist destination, Reuters reported. The U.S. Centers for Disease Control and Prevention also suggested that pregnant women who are especially worried about exposure to Zika - which has been shown to cause the severe birth defect known as microcephaly - might consider avoiding all of Miami-Dade County. The new warnings represent a challenge to Florida's multibillion dollar tourism industry, with Miami Beach accounting for nearly half of visitor stays in the Greater Miami area. They also heighten concerns over Zika's spread in the continental United States. In a press conference, Florida Governor Rick Scott said state health officials had identified five cases of Zika believed to be contracted in Miami Beach. The new transmissions come as Miami-Dade continues to battle Zika in the Wynwood arts neighborhood of Miami, the site of the first locally transmitted cases of Zika in the continental United States. For a graphic of Florida's Zika outbreak, click here: (http://tmsnrt.rs/2b3VUp3) In Miami Beach, the state believes Zika transmission is confined to a 1.5-square-mile area located between 8th and 28th streets in the popular South Beach neighborhood. For a graphic of map, click here, (http://tinyurl.com/hdl6mxs) Miami Beach resident Steve Ehrlich, 30, said news of the five cases transmitted somewhere in the blocks around his home was not surprising, but that did not make it any less concerning. -- SPA 03:09 LOCAL TIME 00:09 GMT www.spa.gov.sa/w