The US maintains a longstanding Level 4 “Do Not Travel” advisory for Russia, originally tied to security risks and the Ukraine conflict, and has not announced any new plague-specific entry restrictions or ban in response to the October 2026 suspected pneumonic plague case in Irkutsk. Russian authorities reported the lab worker’s death as pneumonia of undetermined etiology, lifted local quarantines after negative testing of contacts, and provided information to the WHO indicating no confirmed outbreak or ongoing transmission. US agencies, including the CDC, have focused on screening the limited number of arrivals from the region at existing ports rather than broader prohibitions. Officials have requested additional Russian data and scheduled diplomatic contacts, but current measures align with routine public health monitoring instead of new travel restrictions.