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Asian Longhorned Ticks Found in The Midwest Cattleman · October 1, 2020 · P32

Connecticut As Species Continues Spread

By Aristos Georgiou
Scientists have discov- in 2017 on a farm in New Jer- As a livestock pest,
sey. Since then, they have Asian
longhorned
ered the first established spread to more than a dozen ticks are known to
population of invasive Asian states across the country— transmit diseases to
longhorned ticks (Haema- primarily along the Eastern animals. But the ticks
physalis longicornis) in Seaboard—including Arkan- also present a poten-
Connecticut, according to sas, Delaware, Kentucky, tial risk to human
state officials. Maryland, New Jersey, New health.
The ticks are native to York, North Carolina, Ohio, While they appear
Japan, the Korean Peninsu- Pennsylvania, Rhode Island, to be less attracted
la, eastern regions of Russia Tennessee, Virginia, and West to human skin than
and China. They are a major Virginia. other well-known na-
livestock pest in Australia Now, the Connecticut Ag- tive species—such as
and New Zealand, where they ricultural Experiment Sta- the blacklegged tick,
Photo of an adult female Asian longhorned tick
were introduced more than tion (CAES) has detected an lone star tick and (Haemaphysalis longicornis) on a blade of grass.
120 years ago. established population in American dog tick— (CDC)
They were spotted for the Fairfield, which is located in they have been found
first time in the United States southwestern Connecticut. on people. iting, diarrhea, and multiple
According to the North- organ failure.
The disease has a high fa-
east Regional Center for tality rate of between 12 to
Excellence in Vector-borne 30 percent, according to a
Diseases, Asian longhorned research letter published in
ticks may be capable of in- the journal Emerging Infec-
fecting humans with a virus tious Diseases.
that causes "severe fever It is not yet clear if and to
with thrombocytopenia syn- what extent these ticks can
drome"—an emerging infec- pass on infectious diseases to
tious disease in China, first humans in the U.S. The CDC
detected in 2009, that causes
symptoms such as fever, vom- continued on page 34

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