Regarding the death of a laboratory worker in Irkutsk Oblast of Siberia, Russia, due to severe pneumonia of undetermined etiology, the Centre for Health Protection (CHP) of the Department of Health (DH) said on 12 October 2026 that, according to the World Health Organization (WHO)’s latest announcement, information obtained from the Russian authorities indicated that no evidence of ongoing transmission associated with the event had been identified. Nevertheless, for the sake of prudence, the CHP has implemented a series of control and prevention measures. The CHP will continue to closely monitor the latest developments, respond swiftly, and strictly guard against imported cases in order to safeguard public health.

In recent months, the CHP has not received any reports of residents or travellers arriving in Hong Kong from Russia with cases of pneumonia of undetermined etiology. Based on current information, there is no evidence indicating ongoing transmission. The CHP assesses that the immediate public health impact to Hong Kong is low. For the sake of prudence, the CHP has implemented a series of control and prevention measures to guard against imported cases, including:

1. strengthening health surveillance for passengers arriving on relevant flights from Russia at the airport, including arranging for Port Health Division officers to conduct temperature checks at the relevant flight gates, and conducting health assessments for passengers exhibiting symptoms;
2. displaying signages and broadcasting announcements in the airport arrival area and through airlines to urge passengers who have visited Irkutsk Oblast of Siberia, Russia, within the past 14 days to proactively declare their travel history to the on-site staff of the DH for further health assessment;
3. if an inbound traveller exhibits symptoms of pneumonia, after assessment by Port Health Division officers, arrangements will be made immediately to transfer the individual to a public hospital for further testing; and
4. providing the Airport Authority Hong Kong and airlines with the latest information regarding the case in Russia, and urging airlines to remind their flight crews to strictly enforce established prevention and control measures if they identify suspected cases on their flights.

Some tour groups currently organised by local travel agents may visit Irkutsk Oblast in Siberia as part of their itineraries in Russia. The CHP reminds travellers that if they develop respiratory symptoms after returning to Hong Kong, they should wear a face mask, seek medical attention and report their travel history to a doctor. The CHP will continue to maintain close liaison with the WHO and other relevant health authorities, closely monitor developments, and adjust disease prevention strategies as necessary to safeguard public health.

Members of the public may visit the CHP’s webpages for more information.