In the Tyumen region, samples were taken from four lakes closed due to Gaffkya fever.

Fishing will be allowed only after receiving two consecutive negative test results from the samples. Specialists have taken new samples from four lakes in Tyumen Oblast—Eikhlykul, Andreevskoe, Ishmenevskoe, and Izemetskoe—which are closed due to gaffkemia. This was reported by the press service of the regional veterinary department. "In 2026, the samples were taken in March and are currently being tested. Fishing will be allowed only after receiving two consecutive negative test results from the samples," the department said. Fish samples from these water bodies are taken twice a year. The last time fish were caught for testing was in December 2025, when gaffkemia was detected in all 64 carp. "The cause of the toxin that leads to poisoning is currently insufficiently studied," the press service noted. It is presumed that the carrier could be algae, which the fish feed on. Moreover, there is still no method to get rid of gaffkemia. "Even anthrax can be eliminated in a certain way, ...