Researchers trace path of measles outbreak at Vancouver Olympics

This is cool. I would love to see this happen for more outbreaks just so we can understand better how disease spreads (and mutates) in the real world.

In this circumstance, the study — the largest of its kind involving measles — shows that after two different strains of measles were introduced into the Vancouver area during the 2010 Winter Olympics, one strain headed north along a single highway.