Health: Who Needs Shots?

A lot of parents are still choosing not to vaccinate their babies. But at what risk?

When an Iowa College student returned from a class trip to India last month, he brought back more than the usual souvenirs. The man, 19, was infected with measles, a disease that is largely under control in the U.S. but is endemic in India and can cause high fevers, deafness, inflammation of the brain and even death. He wound up infecting at least one other person on the plane, and Iowa health officials confirmed last week that a third person later developed the disease on the ground.

What happened? It turns out the young man, like several others in his...

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