Sounds like fearmongering to me.
How real is the threat? Many of the world’s most dangerous pathogens already are transmitted by arthropods, the animal phylum that includes mosquitoes. But so far the United States has not been exposed to a large-scale spread of vector-borne diseases like Rift Valley, chikungunya fever or Japanese encephalitis. But terrorists with a cursory knowledge of science could potentially release insects carrying these diseases in a state with a tropical climate like Florida’s, according to several experts who will speak at the workshop.