Of all the things to be nostalgic for, infectious diseases probably don’t make it onto many lists. However, if you happen to pine for the good old days when measles was an active public health threat, I have good news for you. The anti-vaccine crowd is bringing it back. There is currently an outbreak of measles in New York City. Considered eliminated in the United States in 2000, last year saw a record number of outbreaks around the country. It’s only three months into 2014, and not only is the nation’s largest city seeing cases in several boroughs, but other...