Yes, mosquitoes are flying syringes! They sample human blood as a normal part of their life cycle. We can take advantage of this nasty habit by using infected mosquitoes as a tool for monitoring the risk to human populations. Viral infection level in mosquitoes reflects the infection level in humans (Kilpatrick, 2013). Mosquitoes can also be used to screen for animal reservoirs of Zika. We’ve used this method to screen insects for parasites and are committed to adapting it to screen for Zika.