Considerable attention is being focused on potential ZIKV exposure among travelers attending the Olympics and the possibility that they will contribute to the international spread of ZIKV upon return to their home countries (1, 2). The presence of the Aedes aegypti mosquito vector throughout many countries of Africa, Asia, and the Americas is central to these concerns. In addition, ZIKV transmission may occur through sex, unless condoms are used. Some members of the international academic community, most of whom are based outside Brazil, have advocated such measures as postponing the Olympics or relocating events to another country to prevent travel-associated ZIKV infections and exportation (1). In contrast, WHO has advised that travelers who are not pregnant may attend the Olympics safely while taking precautions to avoid ZIKV exposure, and that canceling or relocating the event will not alter international ZIKV spread significantly (3).