It was big news this week when the CDC announced that cases of Lyme disease were vastly underreported and that, in fact, about 300,000 Americans are diagnosed with the disease each year — 10 times its previous estimate. Paul Sax, HMS professor of medicine at Brigham and Women’s Hospital, writes that he’s not at all surprised by the Lyme disease underreporting and offers a few theories on what’s behind it.
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