Release some money to start combatting Zika? Educating people to start using Deet, tracking clusters, hiring people to start eradicating standing pools of water, doing more comprehensive tracking of impact on people, babies, and, if it actually gets really bad, taking heightened measures to wipe out mosquitos that are vectors in more problematic areas - including releasing male mosquitos that are unlikely to fertilize larvae that will grown into yet more zika passing mosquitoes.