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Lyme disease nearly doubled in 10 years. (Increased 8% Since 1999).

The reported incidence of Lyme disease nearly doubled between 1991 and 2000, according to the Centers for Disease Control and Prevention.

In 2000, 17,730 cases of Lyme disease were reported from 44 states and the District of Columbia.

That rate is 8% higher than it was in 1999 and 5% higher than in 1998.

As in previous years, most cases were reported from the northeastern, mid-Atlantic, and north-central regions of the United States (MMWR 51[2]:29-31, 2002).

States with the highest incidence were Connecticut (111 per 100,000 population), Rhode Island (64), and New Jersey (29), according to the CDC.

The median patient age was 39 years. Children aged 5-9 years had the highest reported incidence, 9 cases per 100,000, closely followed by adults aged 50-59, 8 cases per 100,000.

Most cases were reported in June and July, reflecting the infective ticks' seasonal May-June peak of host-seeking activities in areas where Lyme disease is endemic.

Among recipients of 3 doses, the Lyme disease vaccine is 76% effective in preventing the disease.

Other preventive measures include community-based projects in which acaricides are being applied to the animal hosts of Ixodes scapularis ticks.

The CDC and state health departments are aiming to achieve the 2010 national health objective of reducing the incidence of Lyme disease in endemic states to less than 10 cases per 100,000.
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Author:Tucker, Miriam E.
Publication:Internal Medicine News
Article Type:Statistical Data Included
Geographic Code:1USA
Date:Feb 15, 2002
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