An Epidemic 14 Years Ago Shows How Zika Could Unfold in the US
If the Zika virus comes to the United States, we could face the threat of the same sort of virgin soil epidemic—an infection arriving in a population that has never been exposed to it before—that has caused more than 1 million known infections, and probably several million asymptomatic ones, in Central and South America. It’s nerve-wracking to wonder what that would be like: How many people would fall ill, how serious the effects would be in adults or in babies, and most important, how good a job we would do of protecting ourselves.
But, in fact, we can guess what it would be like. Because we have a good example, not that long ago, of a novel mosquito-borne threat that caused