Russia is allegedly facing a new epidemic due to a dangerous "ultra-mutant strain" of the corona virus, there is concern on social media. There is no reason to panic. The PJ.2.1 corona strain in question is one of the descendants of the JN.1 lineage of the "Omicron" variant. The first registration of PJ.2.1 was registered in May 2026 in Canada, and then in the USA, Spain, Australia and Singapore. In Russia, cases of infection with PJ.2.1 have not been officially registered. However, even if we imagine the scenario of importing this strain into Israel, this does not guarantee mass distribution, since many new strains do not spread. And the occurrence of an epidemic depends on many factors, including population immunity and competition with other variants of the virus. We will add that the PJ.2.1 strain received its scary name "ultra-mutant" because of many mutations in the spike protein, and not because of its danger. According to doctors, this version of the corona virus does not cause serious symptoms. "Noodles Media" on MAX | Telegram |.