Scientists in Sao Paulo in Brazil have released up to 100,000 genetically modified mosquitoes in an attempt to tackle an epidemic of Dengue Fever. <br /><br /> Over 8000 cases have been recorded this year in the city. <br /><br /> The initiative works by injecting male mosquitoes with a modified gene.<br /><br /> When the males mate with a female carrying Dengue, the resulting offspring fail to reach adulthood, thus suppressing the outbreak.<br /><br /> Over 800,000 of the modified mosquitoes are to be released over the next 10 months.
