EPIDEMIOLOGICAL MONITORING OF AVIAN INFLUENZA IN THE REPUBLIC OF CRIMEA

The paper presents the results of monitoring tests performed in the FGBI “ARRIAH” Branch in 2018 to detect AIV circulation in the Republic of Crimea. As AIVs are most frequently detected in aquatic and semiaquatic birds wild waterfowl present the greatest threat of the disease introduction and spread. That’s why the paper gives special attention to the Azov Sea and Sivash water area and describes natural biotopes of the Central and Eastern Sivash. During expeditions biological material samples were collected, bird species were identified and bird fauna was estimated in waterfowl aggregation sites. Laboratory PCR tests of the biological material collected during the expedition as well from killed birds and poultry revealed no AIV type A. As the number of wildfowl in the their usual aggregation sites decreased due to the fact that fresh water supply through the North-Crimean Canal ceased it can be assumed that the Crimean peninsula will manage to maintain HPAI freedom despite the fact that the disease is being reported close to the peninsula. Nevertheless, the threat of the virus introduction to the commercial and backyard farm stocks still exists as the peninsula is located in the bird migration routes and AI epidemical monitoring is a topical task.

1. The atlas of highly pathogenic avian influenza outbreaks in the territory of the Russian Federation [Atlas vspyshek vysokopatogennogo grippa ptic na territorii Rossijskoj Federacii]. V. M. Gulenkin, V. N. Irza, A. V. Frolov [et al.]. Vladimir, FGBI “ARRIAH”. 2008 (in Russian).

2. Belov A. B. Hypotheses of avian virus persistence in the biosphere and contemporary epidemiological situation in the world [Gipotezy sohraneniya virusov grippa v biosfere i sovremennaya ehpidemiologicheskaya situaciya v mire]. Novye tekhnologii v proflaktike, diagnostike, ehpidnadzore i lechenii infekcionnyh zabolevanij: materials of the scientifc and practical conference. N. Novgorod, 2004 (in Russian).

3. Dudnikov S. A., Gulenkin V. M. Concept of the natural nidality and avian influenza [Koncepciya prirodnoj ochagovosti i gripp ptic]. Proceedings of the Federal Centre for Animal Health. 2006; 4: 248–280 (in Russian).

4. Clinical signs and postmortem lesions characteristic of avian influenza (Н5N1) in Siberia in 2005 [Klinicheskie priznaki i patologoanatomicheskie izmeneniya pri grippe ptic (N5N1) v Sibirskom regione v 2005 godu]. A. V. Frolov, A. V. Borisov, V. V. Borisov [et al.]. Vet. medicina Ukraїni. 2006; 4: 14–16 (in Ukrainian).

5. L’vov D. K., Ilyichev V. D. Bird migration and infectious agent transmission [Migracii ptic i perenos vozbuditelej infekcii (ehkologo-geografcheskie svyazi ptic s vozbuditelyami infekcii)]. M.: Nauka, 1979 (in Russian).

6. Review of the HPAI subtype 5 situation in Russia in 2016–2017 [Obzor situacii po vysokopatogennomu virusu grippa ptic subtipa H5 v Rossii v 2016–2017 gg.]. V. Yu. Marcenko, I. M. Susloparov, V. E. Ignatyev [et al.]. Problemy Osobo Opasnykh Infectcii [Problems of Particularly Dangerous Infections]. 2018; 1: 30–35; DOI: 10.21055/0370-1069-2018-1-30-35 (in Russian).

7. Rusev I. T. Role of migratory birds in the introduction and spread of highly pathogenic avian influenza in Ukraine [Rol’ migriruyushchih ptic v zanose i rasprostranenii vysokopatogennogo ptich’ego grippa v Ukraine]. Vіsnik SumDU. 2006; 8 (92): 29–41 (in Ukrainian).

8. Epidemiological monitoring of avian infectious diseases in the Republic of Crimea [Epizootologicheskij monitoring infekcionnyh boleznej ptic v Respublike Krym]. N. G. Vorotilova, S. I. Danilchenko, I. B. Ionkina, D. V. Gadzevich. Izvestiya selskokhozyastvennoy nauki Tavridy. 2015; 3 (166): 81–92 (in Russian).

9. Вержиховський О. Епізоотична ситуація з високопатогенного грипу птиці в Україні – стан виконання оздоровчих заходів та недопущення поширення збудника [Epіzootichna situacіya z visokopatogennogo gripu pticі v Ukraїnі – stan vikonannya ozdorovchih zahodіv ta nedopushchennya poshirennya zbudnika]. Vet. medicina Ukraїni. 2006; 3: 14–17 (in Ukrainian).

10. Avian Influenza Portal. OIE. World Organisation for Animal Health. URL: https://clck.ru/FUQRV

11. Novel reassortant clade 2.3.4.4 avian influenza A (H5N8) virus in wild aquatic birds, Russia, 2016. D. H. Lee, K. Sharshov, D. E. Swayne [et al.]. Emerg. Infect. Dis. 2017; 23 (2): 359–360; DOI: 10.3201/eid2302.161252.