Ticks are the most numerousspider-like creatures on our planet. At the moment, scientists are aware of the existence of more than 54,000 species of ticks, some of which spread deadly diseases to humans. These include not only encephalitis, which causes inflammation of the brain and often leads to death, but also the so-called fever of the Congo-Crimea. One of the rarest, but at the same time deadly tick-borne infections, is considered to be a disease caused by the Povassan virus. Cases of infection with this virus are extremely rare, but it often leads to memory impairment, epilepsy and even death.
Over the past decade in the us from this diseaseno more than 21 people died, but scientists believe that the virus is becoming more common. The fact is that their carriers are the so-called black-legged mites (Ixodes scapularis), which live in the USA, Finland and the central regions of Russia. They become infected with the virus in white-tailed deer and may well transmit the disease to humans. Due to climatic changes, the reproduction of ticks can significantly accelerate - along with an increase in their number, the number of infected people can also increase.
Tick-borne infections will be more
The fact that the disease is becoming morewidespread, says an increasing number of deaths. Recently, two people died from Povassan virus - the first was a resident of the United States, and the second was an Irishman. The incubation period, which includes the moments when the virus enters the body and the first symptoms of the disease appear, lasts about a week. Further, the disease is difficult and is accompanied by weakness, fever, severe headache and nausea.
Black-footed tick (Ixodes scapularis)
In some cases, the virus reaches the brain andbecomes the cause of its inflammation. In about 10% of cases, the person dies, and the rest of the people become disabled and suffer from headache, memory impairment and epilepsy. In general, the effects of infection with Povassan are very similar to the problems caused by horse encephalitis - we wrote about this terrible disease in an article about deadly mosquito bites.
By the way, here it is: Can a mosquito bite lead to inflammation of the brain and death?
How to protect yourself from ticks?
As in the case of horse encephalitis, the virusPovassan at the moment there is no vaccine. In this regard, scientists can only tell people how to defend themselves from ticks. The most important precaution is to wear high shoes and thick clothes that prevent mites from reaching their legs, hands and other parts of the body. Of course, it is not necessary to walk in this form everywhere - usually, ticks live in forests and territories with high grass and are active from early spring to late autumn.
Black-footed tick female lays eggs
Also do not forget about the means forscaring ticks. The skin should be applied with the content of permethrin, which disrupts the nerve cells of arthropods. It is noteworthy that this substance can be dangerous for cats, because it is derived from their body much longer than from the human body.
This is interesting: 10 deadly diseases that people have picked up from animals
Well, finally, after a walk in the woods to everyoneWithout exception, it is recommended that a person take a shower that can wash off ticks that have not yet attached. After the shower, you need to carefully examine the body - perhaps the tick has already hooked. If this is the case, you should immediately consult a doctor.</ p>
If you are interested in the news of science and technology, be sure to subscribe to our channel in Yandex. Dzen. There you will find materials that have not been published on the site!