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