Florida has a dengue problem. The solution may be more mosquitoes

In a major milestone, the World Health Organization endorsed widespread use of a vaccine aimed at stemming the effects of the parasitic disease malaria, particularly in sub-Saharan Africa. Miles O'Brien looks at efforts to tackle other diseases carried by mosquitoes in the Florida Keys, where scientists are testing a way to kill mosquitoes -- with mosquitoes. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders