CDC: Up to 300,000 Lyme cases each year

Associated Press

ATLANTA

Lyme disease is about 10 times more common than previously reported, health officials said Monday.

As many as 300,000 Americans are actually diagnosed with Lyme disease each year, the Centers for Disease Control and Prevention announced.

Usually, only 20,000 to 30,000 illnesses are reported each year. For many years, CDC officials have known that many doctors don’t report every case and that the true count was probably much higher.

The new figure is the CDC’s most comprehensive attempt at a better estimate. The number comes from a survey of seven national laboratories, a national patient survey and a review of insurance information.

The ailment is named after Lyme, Conn., where the illness first was identified in 1975. It’s a bacterium transmitted through the bites of infected deer ticks, which can be about the size of a poppy seed.

Symptoms include a fever, headache and fatigue and sometimes a rash that looks like a bull’s-eye centered on the tick bite. Most people recover with antibiotics. If left untreated, the infection can cause arthritis and more-severe problems.