If caught early, Lyme is easily treated with antibiotics. But activists, and many researchers, have long contended that tens of thousands of people remain unaware that they have been infected - sometimes for years, during which the bacterium can spread to the heart, nervous system, and brain.

For decades, Barbara Walters has been described as a broadcast pioneer - and with good reason. In 1974, Walters became the first female host of the 'Today' show. In 1976, she became the first woman to serve as a network-news anchor. In 1984, she moderated the first presidential debate between Walter Mondale and Ronald Reagan.

The numbers matter: underreporting of Lyme disease obscures the true burden of the illnesses, on individuals as well as on health-care systems. It also makes it harder to convince Congress to fund research.

Michael Specter Quotes