One area of tourism that it has definitely affected is the so-called "babymoon" sector, but most people in the industry think that that will be about it.
If you think about it, this situation is pretty much exactly the same situation as Rubella (German measles) was once upon a time. I happen to be allergic to the Rubella vaccine, and my doctors went nuts about travel warnings whenever I was pregnant, because unlike most US women, I'm not immune -- but it has never been an issue at any other time in my life. Zika is a teratogenic pathogen, but otherwise is a fairly mild little short-lived disease, just like Rubella.
Now that the teratogenic effect evidence is solid, Zika will be fast-tracked for vaccine development, and I predict that females will be routinely vaccinated for it in childhood before 10 years have passed. (There will be political pressure to fund it, because as happened with Rubella, epidemic incidence of teratogenic disease will increase a nation's abortion rate. We all know what a political hot-button that is in the US, so lawmakers will find the money to try to head off that happening.)