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Doctors worldwide are concerned about the increasing prevalence of ticks. These are tiny, blood-sucking bugs that germs from one host to another. Their bites can on serious health problems like Lyme disease. The Centers for Disease Control and Prevention (CDC) in the USA has a dramatic upswing in tick activity. It said thirty-one million Americans are by ticks annually, and that the number of cases is year by year. Biology professor Vett Lloyd said: "Tick populations are geographically because we're the climate." The UK's 'Guardian' newspaper that cases of Lyme disease over 20 per cent between 2024 and 2025.

Ticks are arachnids — they are to spiders. They have oval, flat bodies and eight legs. After they themselves with blood, their bodies become spherical. They in size from the size of a poppy seed to an apple seed. They on to animals and humans by their mouthparts into the skin of their victims. Their mouthparts the skin and drink blood for days. Their saliva a mild anaesthetic. This the bite area, so people often do not feel anything. The CDC offers advice for avoiding tick bites. It wearing insect repellents that contain the ingredient DEET. It also wearing long-sleeved shirts, long pants and closed shoes.