US officials have responded to the unconfirmed pneumonic plague case involving an Irkutsk lab worker with targeted monitoring rather than new entry restrictions. The CDC has positioned existing airport staff to screen the roughly 200 annual travelers from the affected Siberian region, while assessing low overall risk to the United States and issuing no do-not-board orders. Russian authorities reported no confirmed plague cases or ongoing transmission after testing contacts, a position consistent with WHO assessments that advise against travel or trade measures. The longstanding Level 4 “Do Not Travel” advisory for Russia, driven by security and consular concerns tied to the Ukraine conflict, remains unchanged and already covers all purposes. Direct commercial flights between the countries have been suspended since 2022, further limiting any need for additional plague-specific prohibitions through the end of 2026.