This was reported by the Defence Intelligence of Ukraine on Telegram.
It noted that dissatisfaction is growing in the units of the Russian occupying army due to inadequate provision of winter clothing and a complete lack of medical care.
Because of this, Russian troops are suffering from "mouse fever" in the Kupyansk direction. The disease is viral in nature and is transmitted to humans from rodents - through direct contact with the pathogen, inhalation of mouse feces dust or contamination of food for human consumption.
Symptoms of “mouse fever” include severe headache, fever up to 40 degrees, rashes and redness, low blood pressure, hemorrhages in the eyes, nausea, and vomiting several times a day.
Since the disease affects the kidneys, a person infected experiences intense pain in the lower back and has serious difficulty urinating.
The Defence Intelligence emphasizes that complaints about the fever from Russian army personnel involved in the war against Ukraine were ignored by the command, which regarded them as another manifestation of evasion from participation in hostilities. In addition, at the first stage of its course, "mouse fever" resembles a common flu.
"As a result, the 'mouse fever' has significantly reduced the combat capability of the Russian 'rats,’" the Defence Intelligence press center writes.