I just booked a trip a few weeks ago as Zika did not appear to be an issue in FL and this warning came out.
I will be nearing the end of my second trimester (24 or 23 weeks I think?) which from our research is better than getting it in the first trimester. Our airfare is non-refundable so we did research and weigh the risks to see if it was worth losing the money.
Now that being said right now its contained to the Miami area. Also the first baby born in US with Zika was in the area I live as the family came to the US from South America with Zika. I live right outside NYC and there is a huge Hispanic population. Humans are the carriers which means if they were in a Zika area where ever they return to is an at risk area, so I am just as at risk being outside in my own neighborhood as I would be in FL which is why we booked the trip before the warning came out. We figured I was just as likely to get bit in an unrecorded breakout in my area as I was in WDW. I have stayed inside a lot this summer but the few times I was out I did get a few bites, like just walking for 20 minutes. I am going to wear bug spray and hope for the best, I don't know how far it can spread in the next 50-60 days. It's not good to get it at all while pregnant but then again I get more mosquito bites in my home area than I have ever gotten on a WDW trip (I actually can't remember if I ever got any oddly enough).
I think what people forget is the strong warnings that came out from South America are for areas where people might not even have window screens or AC, and live in a tropical area without the same access to spraying. For me it's like night and day. Also those mosquitoes that spread it are active all day, not just at night. So until they tell ever woman of child bearing age to not go outside in FL I will feel comfortable going there for just a few days. That being said I would not plan a trip there in several months or next year as its more likely to grow in that time. Considering we are nearing the end of summer the fact that there has been only one outbreak in the US identified is amazing since the mosquitoes that carry cover a chunk of the country.