The flowers are green and the trees are green, which is a good time for outdoor activities.
Many people have plans to go on a wild trip, but everyone should pay attention when playing on the mountain! There is a kind of bug that will also appear at this time, which is what we often call "grass crawler".
Grass crawlers are scientifically known as ticks. It is a common blood-sucking insect in the northeast region, although it has no wings and cannot fly, but it crawls quickly among grass and trees.
Grass crawlers resemble common ladybugs, but when they suck up to the blood, their bodies can swell up to 100 times larger to become the size of a spider.
Grass crawlers are a poisonous blood-sucking insect. Many people don't feel it after being bitten. Because there is something similar to anesthetic in the blood of grass crawlers.
Last summer, the Second Hospital of Heilongjiang Province received a 29-year-old man who was playing in Xiaoxing'anling Forest Park when he was bitten by ticks and returned three days later with fever, muscle aches, weakness and head and neck pain. Body temperature to hospital is up to 39.5 °C.
Based on the above clinical diagnosis, the Department of Toxicology and Neurologists confirmed that he was suffering from an insect-borne infectious disease - Lyme disease.
According to the information of China's Center for Disease Control and Prevention, ticks are widely distributed in China, and are the second largest pathogenic transmission vector after mosquitoes in the world, and their bites can infect people with Lyme disease, forest encephalitis and other diseases, and can be fatal when severe. Monitoring for unknown cases of fever and identifying tick-borne pathogens such as unknown viruses associated with them is an important part of controlling emerging infectious diseases.
On May 30, 2019, Liu Quan's research group of Foshan Institute of Science and Technology, in collaboration with Professor Zhou Jiyong of Zhejiang University and Wang Wei, Dean of the Second Affiliated Hospital of Inner Mongolia University for Nationalities, published a paper entitled A New Segmented Virus Associated with Human Febrile Illness in China in the New England Journal of Medicine (NEJM). The study first reported AaronShan virus (ALSV), a segmented RNA virus of the flaviviridae family transmitted by tick bites, and suggested that the virus may cause certain febrile diseases in northeastern China.
Aaron Mountain virus is associated with many symptoms, including fever, headache, and fatigue, and in some cases nausea, rash, and even coma. So far, experts say, the virus has only been found in northeastern China, but there may be a wider range of transmission.
The "first" infected person was first identified in a 42-year-old farmer from Aaron Mountain, Inner Mongolia, who mysteriously fell ill with fever, headache and nausea. In April 2017, he went to a hospital in inner Mongolia. The farmer also said he had been bitten by ticks, and at first doctors thought the patient was infected with another virus transmitted by ticks, the infectious encephalitis virus (TBEV). The virus is transmitted by ticks and is endemic to the region. But the patient's TBEV test was negative, which led the researchers to look for other causes. Further studies revealed that the patient was infected with a virus that was different from other known viruses.
After discovering the new virus, the researchers began examining blood samples from other patients with similar symptoms and reported a history of tick bites. They found that over the next 5 months, 86 of the 374 patients were infected with the Aaron Hill virus. Almost all of these patients are farmers or forestry workers, the report said. When the researchers tested ticks and mosquitoes in this area, they found that both insects had the virus.
The researchers suspect that the virus is transmitted by the Taiga tick, which is distributed in parts of Eastern Europe and Asia, including China, South Korea, Japan, Mongolia and Russia. Still, the study can't prove that the tick actually transmits the disease, nor does it rule out the possibility that mosquitoes can spread the disease. Laura Goodman, an assistant research professor at Cornell University's School of Veterinary Medicine in Ithaca, New York, called the new work an "excellent study," but said the study left a number of unanswered questions. Crucially, researchers need to identify which disease "vector" is capable of transmitting the disease to people.
Goodman said: "Until we really know the answer to this question, we can't fully determine the potential geographic extent of the virus. "However, the researchers of this new study were able to describe the entire genome of the Arone Mountain virus, and this information will help to monitor the virus more broadly."
In the new study, all 86 patients were treated in combination with antiviral and antibiotic drugs based on their symptoms, and their symptoms disappeared after 6 to 8 days of treatment. The report said patients were hospitalized for an average of 10 to 14 days, and all patients eventually recovered to health without any long-term complications. The researchers concluded: "Our findings suggest that Arone mountain virus may be the cause of a previously unknown fever and that more research should be done to determine the geographic distribution of the disease outside of its current identification area." ”
Editor: Jin Wanxia Responsible Editor: Jiang Peng
Source: Chinese Center for Disease Control and Prevention, Fast Technology