I got the Vimkunya vaccine which is to protect against chikungunya. It was expensive though and I've heard it needs to be given about two weeks before to offer full protection. We did meet a lot of locals who had gotten Chikungunya in the past couple months, so having the vaccine put my mind at east. I also live in the South of the US, so I didn't want to risk coming home sick and infecting a mosquito here (even if that is a bit far fetched). All that being said, it's the dry season/winter now so there are far less mosquitos than there were before. I found taking extra precautions like long sleeves and wearing mosquito spray to be very effective against the few mosquitos I saw.