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n. 阻止，妨碍，预防
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- About 300,000 cases of tick-borne Lyme disease are diagnosed in the U.S. each year,
- 每年，美国约有三十万例蜱传播的莱姆病，
- and with an expanding tick population, experts think this year could be worse than usual.
- 随着蜱数量的增长，今年可能会比平时更糟。
- Thanks to a milder winter and more host animals, there could be more cases of Lyme and deadly tick-borne infections.
- 由于温和的冬天和更多的宿主动物，可能有更多莱姆病例和致命蜱感染。
- Powassan virus, for example, causes swelling in the brain that can lead to permanent neurological damage. It's fatal in about 10 percent of cases.
- 例如玻瓦桑病毒，使大脑肿胀并导致永久性的神经损伤。大约10%的病例是致命的。
- Some ticks even carry another disease that can give you a meat allergy.
- 一些蜱甚至携带另一种疾病，可以使你肉过敏。
- Researchers warn it's getting more common, but they're still learning about how and why the disease spreads.
- 研究人员警告称，现在这种情况越来越普遍，但他们仍在学习这种疾病如何和为何蔓延。
- The Centers for Disease Control and Prevention isn't tracking it closely yet.
- 美国疾病控制与预防中心也没有密切跟踪。
- Luckily, those diseases are still relatively rare, especially compared with Lyme.
- 幸运的是，这些疾病仍然是比较少见的，尤其是相比于莱姆病。
- For example, in the decade since 2006, the CDC recorded fewer than seven cases of Powassan virus on average every year.
- 例如，自2006年以来的十年，美国疾病控制与预防中心记录的玻瓦桑病毒平均每年少于7例。
- The CDC recommends people avoid tick-borne diseases by using insect repellent, staying out of brush and tall grass, and taking showers after visits to tick country.
- 疾病控制与预防中心建议人们使用驱虫剂避免蜱传播疾病，远离灌木丛和高草从，访问有蜱的农村后洗澡。
- If you're bitten, tell your doctor about any fever or rash.
- 如果你被咬了，有任何发热或皮疹，告诉你的医生。
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