In this Wednesday, Oct. 3, 2012 photo, Key West, Fla. resident Joel Biddle rides his bicycle in Key West. Biddle was one of the 93 cases of dengue fever were reported in Key West in 200

 

              In this Wednesday, Oct. 3, 2012 photo, Key West, Fla. resident Joel Biddle rides his bicycle in Key West. Biddle was one of the 93 cases of dengue fever were reported in Key West in 200
In this Wednesday, Oct. 3, 2012 photo, Key West, Fla. resident Joel Biddle rides his bicycle in Key West. Biddle was one of the 93 cases of dengue fever were reported in Key West in 2009 and 2010. The British company Oxitec and mosquito control officials hope to release genetically modified mosquitoes to control the Aedes aegypti mosquito population, that can transmit dengue fever, without using pesticides and at relatively a low cost. But some Key West residents and environmental groups think the genetically modified mosquitoes pose a bigger threat than regular dengue or even dengue hemorrhagic fever. They worry the modified genetic material will somehow be passed to humans and the Keys ecosystem and they want more research into the potential risks. (AP Photo/Wilfredo Lee)