The Ministry of Health in Brazil has been getting a new head of department every few months, depending on the backstage deals the president has had to make in order to keep her government in place. So no, I wouldn't count on any coordinated actions being spearheaded by the government. They are pretty busy running around like headless chickens, which means insisting in inneficient methods to eliminate the mosquito (e.g. fuming).

Some airlines have been allowing passengers to refund tickets to areas affected by Zika [1].

I think every decent travel agency should worry its customers that traveling to Brazil at this time is not a good idea.

Besides the health issues, Brazil is ousting its president today and most leftist parties and unions have vouched to stop the country with strikes, blockades and protests. You may get stuck in a 2-hour traffic jam on your way to the games.

1 - http://www.independent.co.uk/news/business/news/zika-virus-m...