NATIONAL WEEKLY RSV BULLETIN OF THE RUSSIAN FEDERATION

week 4 of 2026 (19.01.26 - 25.01.26)

Non-sentinel surveillance data were received from 37 cities (Arkhangelsk, Astrakhan, Belgorod, Birobidzhan, Volgograd, Vologda, Voronezh, Yekaterinburg, Irkutsk, Kazan, Kaliningrad, Kemerovo, Kirov, Krasnodar, Krasnoyarsk, Kursk, Lipetsk, Moscow, Murmansk, Novosibirsk, Norilsk, Omsk, Orenburg, Perm, Petrozavodsk, Petropavlovsk, St. Petersburg, Simferopol, Smolensk, Syktyvkar, Tula, Ulan-Ude, Ulyanovsk, Khabarovsk, Cheboksary, Yuzhno-Sakhalinsk, Yakutsk) located in 7 Federal Districts. A total of 7467 patients with ARVI were tested by PCR for RSV, of which 96 (1.3%) were positive. This included 48 (4.8%) cases aged 0-2 years, 13 (1.8%) cases aged 3-6 years, 11 (1.1%) cases aged 7-14 years and 24 (0.5%) cases aged 15 years and older.

PCR testing data for RSV from week 40 of 2025 to week 04 of 2026 showed a total 145345 patients were investigated, including 22700 children aged 0-2 years, 17819 children aged 3-6 years, 30781 children aged 7-14 years and 74045 patients aged 15 years or older. RSV as a cause of acute respiratory infection was more commonly detected among children aged 0-2 years.

The cumulative detection rate among children aged 0-2 years from week 40 of 2025 to week 04 of 2026 was 1.4%. Among children aged 3-6 years, the detection rate was 0.7%, among children aged 7-14 years - 0.3%. The RSV detection rate among patients aged 15 years or older was 0.2%.

In the period from week 40 of 2025 to week 04 of 2026, RSV was detected in all weeks. The average RSV detection rate was approximately 0.5%. The highest weekly detection rate of approximately 1.3% was reported on week 04.2026.