Health officials say local residents in Florida spread the disease . CNN 's Miriam Falco and Jennifer Bixler contributed to this report . Two dengue cases have been reported in two Florida counties . Dengue rarely occurs in the United States . There are up to 100 million infections annually worldwide , the WHO estimates .
Health officials say local residents in Florida spread the disease . Two dengue cases have been reported in two Florida counties . Dengue rarely occurs in the United States . There are up to 100 million infections annually worldwide , the WHO estimates .