Diseases, Conditions, Syndromes

To prevent tick encounters, where you dump your leaves matters

If you cleared fallen leaves from your lawn last fall, did you deposit them along the edge of your lawn, where grass meets woods? If you did, you might have unwittingly created an ideal habitat for blacklegged ticks.

Diseases, Conditions, Syndromes

Lyme disease is caused by bacteria

Lyme disease is caused by four main species of bacteria. Borrelia burgdorferi and Borrelia mayonii cause Lyme disease in the United States, while Borrelia afzelii and Borrelia garinii are the leading causes in Europe and ...

Diseases, Conditions, Syndromes

Spillover: Why germs jump species from animals to people

When a disease spreads from one species to another it is known as a "spillover event." Although not yet confirmed, preliminary evidence suggests that the virus that causes COVID-19, the 2019 coronavirus disease, may have ...

Diseases, Conditions, Syndromes

Chronic Lyme disease: How often is it diagnosed and treated?

The existence of chronic Lyme disease is an issue of sharp debate within the medical community. Some health care workers who call themselves "Lyme literate" insist that chronic Lyme disease is frequently diagnosed and treated ...

Medical research

New test diagnoses Lyme disease within 15 minutes

Some 300,000 people in the U.S. are diagnosed with Lyme disease every year. Caused by Borrelia burgdorferi and transmitted by the bite of infected Ixodes ticks, the disease if left untreated can cause serious neurologic, ...

Diseases, Conditions, Syndromes

Lyme disease now a threat in city parks

(HealthDay)—As deer populations have exploded across America, moving from forests to suburbs to urban parks, they have brought the threat of Lyme disease to millions of city dwellers, a new study finds.

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Lyme disease, or Lyme borreliosis, is an emerging infectious disease[when?] caused by at least three species of bacteria belonging to the genus Borrelia. Borrelia burgdorferi sensu stricto is the main cause of Lyme disease in the United States, whereas Borrelia afzelii and Borrelia garinii cause most European cases. The disease is named after the town of Lyme, Connecticut, USA, where a number of cases were identified in 1975. Although Allen Steere realized that Lyme disease was a tick-borne disease in 1978, the cause of the disease remained a mystery until 1981, when B. burgdorferi was identified by Willy Burgdorfer.

Lyme disease is the most common tick-borne disease in the Northern Hemisphere.[citation needed] Borrelia is transmitted to humans by the bite of infected ticks belonging to a few species of the genus Ixodes ("hard ticks"). Early symptoms may include fever, headache, fatigue, depression, and a characteristic circular skin rash called erythema migrans (EM). Left untreated, later symptoms may involve the joints, heart, and central nervous system. In most cases, the infection and its symptoms are eliminated by antibiotics, especially if the illness is treated early. Delayed or inadequate treatment can lead to the more serious symptoms, which can be disabling and difficult to treat. Lyme disease is a biosafety level 2 disease.[citation needed]

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