New Yorkers are threatened by a rapidly multiplying dangerous tick species - ForumDaily
The article has been automatically translated into English by Google Translate from Russian and has not been edited.
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Residents of New York are threatened by rapidly multiplying dangerous species of ticks.

Scientists have noted a sharp increase in the population of a new potentially dangerous pest known as Haemaphysalis longicornis (East Asian or Long-tailed Mite) in Staten Island. The tick, which, unlike other native species, can clone itself in large numbers, is likely to continue its active reproduction in the coming months.

Фото: Depositphotos

«Проблема, связанная с этим клещом, заключается в том, что он может передавать человеческие патогенные микроорганизмы и вызывать заболевания у людей», — объясняет исследователь Мария Дьюк-Вассер, доцент кафедры экологии, эволюции и биологии Колумбийского университета, которая занимается изучением клещей и риска заболеваний человека.

В новом исследовании, опубликованном в апрельском выпуске журнала Emerging Infectious Diseases, Дьюк-Вассер и ее коллеги проводят наиболее исчерпывающую локальную перепись новых видов на сегодняшний день — и предполагают, что распространение этого вида клеща в Статен-Айленде гораздо более угрожающе, чем считалось ранее.

An East Asian or long-tailed tick, Haemaphysalis longicornis, has been found in New Jersey, New York, Pennsylvania and in six other states since its discovery in 2017.

Mite Haemaphysalis longicornis is a distributor of the SFTS virus that causes severe fever with thrombocytopenia syndrome (a condition characterized by a decrease in platelet count, which is accompanied by increased bleeding and problems with bleeding), this infection from ticks was recorded in some parts of China. In addition to fever and low platelets, people with SFTS can also develop gastrointestinal symptoms, decrease white blood cell count and disrupt the liver. Up to 30,% of people with SFTS die, as a rule, due to the failure of several organs.

The East Asian tick also spreads the bacteria: Rickettsia japonica, which can cause Japanese spotted fever; Theileria orientalis, which can cause silyosis in cattle; and transfer some other microbes.

Recall that 1 August 2017, the owner of an 12-year-old Icelandic sheep, went to the health department of Hunterdon County (New Jersey) to show them a strange phenomenon: having shaved an animal, he found that his skin was covered with thousands of ticks.

Discovered on sheep, ticks belonged to the species Haemaphysalis longicornis. They are commonly found in East Asia (Russia, Japan, China, and Korea), New Zealand, Australia, and several Pacific Islands (New Caledonia, Fiji, Western Samoa, Tonga, Vanuatu). But an infected sheep did not leave the territory of Hunterdon County, so scientists still do not know how ticks entered the United States.

After seeing the sheep, district health experts went to the farm where she lived to explore the area.

According to them, the number of mites in the pasture was so numerous that they began to crawl on the pants of experts within a few minutes after they came. On the body of each sheep there were hundreds of ticks in all three stages of active life: larva, pupa, adult. The insects were mainly concentrated on the ears and the muzzle of the sheep, but at a lower concentration, the bloodsuckers spread throughout the body of the animals.

This was the first time that ticks in the USA lived in flocks, moreover, these insects reproduce in a non-sexually transmitted way.

In 2017, officials tried to eliminate ticks by washing sheep with chemicals, mowing high grass in the area and introducing additional control over the spread of ticks. They hoped that this species of ticks would not survive the winter. However, on April 20, the New Jersey Department of Agriculture announced that, despite the cold winter, a new species of ticks still occurs.

Precautions to be observed in fresh air:

  • wear special protective suits;
  • Give preference to light-colored clothing in order to quickly detect crawling mites;
  • treat clothing with repellents (anti-tick aerosols);
  • conduct self-examination and examination of animals in order to detect ticks;
  • when removing a tick, place it in a vial without destroying it, and take it to a laboratory for research;
  • do not try to remove the tick from the clothes or from the body with your hands - use tweezers;
  • consult an infectious disease physician on the same day.

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