Here is some very thoughtful commentary from Dr. Amir Attaran published in Harvard Public Health Review.
Here’s the clincher from that opinion article:
“Which leads to a simple question: But for the Games, would anyone recommend sending an extra half a million visitors into Brazil right now? Of course not: mass migration into the heart of an outbreak is a public health no-brainer. And given the choice between accelerating a dangerous new disease or not—for it is impossible that Games will slow Zika down—the answer should be a no-brainer for the Olympic organizers too. Putting sentimentality aside, clearly the Rio 2016 Games must not proceed.”
I agree. Either Zika in South America and the Caribbean is a Public Health Emergency of International Concern, in which case the games must not proceed… Or it isn’t. It is, and the games should not be carried out because the danger is real of the virus being taken back home by athletes and visitors.