In the world, which has been struggling with the Crimean-Congo hemorrhagic fever disease for a long time, the tick nightmare has brought along a new virus. This virus, which causes CKA-like symptoms, is also thought to be caused by ticks. So how did this virus come about?
WHAT IS YEZO VIRUS, WHAT ARE THE SYMPTOMS?
Yezo virus was discovered in a 41-year-old man who was hospitalized with fever and leg pain after being bitten by an arthropod believed to be a tick while walking in a local forest in Hokkaido in 2019.
Genetic analysis of viruses isolated from the blood samples of two patients found a new strain of ortonairovirus, a class of nairoviruses that includes pathogens such as the Crimean-Congo hemorrhagic fever virus. Scientists named it Yezo virus, after a historical Japanese name for Hokkaido, a large island north of the country where the virus was discovered. The new virus was found to be most closely related to Sulina virus and Tamdy virus detected in Romania and Uzbekistan, respectively, and these were recently reported to cause acute fever in humans in China.
The known death from this virus, which has been detected in 7 people so far, has not yet been recorded. It can show symptoms such as high fever, weakness, loss of appetite, muscle pain, headache, nausea, vomiting, diarrhea and, in severe cases, bleeding.