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According to the Centers for Disease Control and Prevention (CDC), tickborne diseases doubled in the United States between the years 2004 and 2016. Lyme disease, in particular, is difficult to diagnose due to its disparate symptoms that mimic other diseases, making it greatly underreported. As a result, the prevalence of Lyme disease is thought to be even higher than the CDC suggests.
Lyme disease is caused by the bacterium Borrelia burgdorferi, which is spread through a relationship involving three animals. This relationship starts with the white-footed mouse (or in California, the Western gray squirrel), which is prone to infection by the bacterium. Ticks in their larval form feed on the blood of these mice. If the mouse is infected, the tick becomes infected as well. After passing through a dormant phase, the tick nymph, usually the size of a poppy seed, seeks another blood meal. This meal might come from another mouse, a human, or a dog or cat.
The nymphs then molt into active adults, whose primary food source is the whitetail deer. They mate on the deer, drop off, and lay their eggs, thus starting the cycle over again. Humans can be bitten by either an infected nymph or a full-grown adult tick. For Lyme disease transmission, the tick needs to attach for about 36 hours. Unfortunately, tick bites are easy to overlook; they do not itch like mosquito bites or sting like deerfly bites. Many people go without treatment for months until a test clarifies their seemingly unrelated symptoms, which may include joint pain, a rash, fatigue, swollen glands, chills or fever, headache, or even paralysis.
If you know you have been bitten by a tick, time is of the essence. It is important to see a doctor, get tested, and receive treatment promptly.
What is the meaning of the word disparate as used in the first paragraph?
Correct Answer: B
Rationale: "Disparate" means diverse or different. The passage discusses how Lyme disease has various symptoms that mimic other diseases, making it difficult to diagnose.