By Julie Steenhuysen

CHICAGO (Reuters) – The state of Florida has identified 10 more cases of Zika virus caused by local mosquitoes and has asked the U.S. Centers for Disease Control and Prevention to send in experts to help with the investigation of the outbreak.

The state now has a total of 14 cases of Zika caused by locally transmitted mosquitoes, according to a statement issued on Monday by Florida Governor Rick Scott.

The Florida Department of Health said it believes active transmission of Zika is restricted to one small area in Miami-Dade County, just north of downtown Miami.

The health department said six of the 10 new cases are asymptomatic and were identified through the door-to-door community survey and testing that it is conducting.

Scott said the state has called on the CDC to activate a CDC Emergency Response Team to assist the Florida Department of Health and other partners in their investigation, sample collection and mosquito control efforts.

(Reporting by Julie Steenhuysen; Editing by Bill Trott)