Highly Pathogenic #Avian #Influenza A(#H5N8) Virus in Gray #Seals, #Baltic Sea (Emerg Infect Dis., abstract)

[Source: US Centers for Disease Control and Prevention (CDC), Emerging Infectious Diseases Journal, full page: (LINK). Abstract, edited.]

Volume 25, Number 12—December 2019 / Dispatch

Highly Pathogenic Avian Influenza A(H5N8) Virus in Gray Seals, Baltic Sea

Dai-Lun Shin, Ursula Siebert, Jan Lakemeyer, Miguel Grilo, Iwona Pawliczka, Nai-Huei Wu, Peter Valentin-Weigand, Ludwig Haas1, and Georg Herrler

Author affiliations: University of Veterinary Medicine Hannover, Hannover, Germany (D.L. Shin, U. Siebert, J. Lakemeyer, M. Grilo, N.H. Wu, P. Valentin-Weigand, L. Haas, G. Herrler); University of Gdańsk, Gdańsk, Poland (I. Pawliczka)



We detected a highly pathogenic avian influenza A(H5N8) virus in lung samples of 2 gray seals (Halichoerus grypus) stranded on the Baltic coast of Poland in 2016 and 2017. This virus, clade B, was closely related to avian H5N8 viruses circulating in Europe at the time.

Keywords: Avian Influenza; H5N8; Seals.


Lethal #Encephalitis in #Seals with #JEV #Infection, #China, 2017 (Emerg Infect Dis., abstract)

[Source: US Centers for Disease Control and Prevention (CDC), Emerging Infectious Diseases Journal, full page: (LINK). Abstract, edited.]

Volume 25, Number 8—August 2019 / Dispatch

Lethal Encephalitis in Seals with Japanese Encephalitis Virus Infection, China, 2017

Xiangdong Li1, Mingming Qiao1, Xiaoyu Deng, Xi Chen, Shengyong Sun, Qian Zhang, Wenjie Zhang, Feifei Tan, Zhe Sun, Xizhao Chen, Ming Sun2  , and Kegong Tian2

Author affiliations: National Research Center for Veterinary Medicine, Luoyang, China (X. Li, F. Tan, Z. Sun, K. Tian); Beijing Anheal Laboratories Co. Ltd, Beijing, China (M. Qiao, X. Deng, Xi Chen, S. Sun, Q. Zhang, W. Zhang, Xizhao Chen, M. Sun); Henan Agricultural University, Zhengzhou, China (K. Tian)



We isolated Japanese encephalitis virus (JEV) from brain samples of 2 seals with lethal encephalitis at Weihai Aquarium, Weihai, China, in 2017. We confirmed our findings by immunohistochemical staining and electron microscopy. Phylogenetic analysis showed this virus was genotype I. Our findings suggest that JEV might disseminate though infected zoo animals.

Keywords: Japanese Encephalitis Virus; Seals; Wildlife; Encephalitis.


Characterization of #Avian-like #Influenza A (#H4N6) Virus Isolated from Caspian #Seal in 2012 (Virol Sin., abstract)

[Source: Virologica Sinica, full page: (LINK). Abstract, edited.]

Characterization of Avian-like Influenza A (H4N6) Virus Isolated from Caspian Seal in 2012

Authors: Marina Gulyaeva, Ivan Sobolev, Kirill Sharshov, Olga Kurskaya, Alexander Alekseev, Lidia Shestopalova, Anna Kovner, Yuhai Bi, Weifeng Shi, Michael Shchelkanov, Alexander Shestopalov

Letter / First Online: 17 October 2018


Dear Editor

Marine mammals are widely distributed and can be found almost in all coastal waters and coastlines around the world. The interface areas between marine and terrestrial environments provide natural habitats for aquatic and semi-aquatic mammals as well as for reservoir species of avian influenza viruses (AIV) (Runstadler et al. 2013). Previous studies showed that wild aquatic birds, the natural reservoir of AIV, are able to transmit the virus to various mammals, including seals, swine, horses, muskrats, and humans (Webster et al. 1992; Reperant et al. 2009; Gulyaeva et al. 2017). Close contacts between sea mammals and wild birds on breeding-grounds could promote both interspecies transmission of AIV and virus establishment in a new host (Fereidouni et al. 2014). Various AIV subtypes (A/seal/Massachusetts/80(H7N7), A/Seal/MA/133/82(H4N5), A/Seal/MA/3807/91(H4N6), A/Seal/MA/3911/92(H3N3), A/harbour seal/Mass/1/2011(H3N8) and A/harbor seal/NL/PV14-221_ThS/2015(H10N7) etc.) have…






This study was supported by RFBR (research project No.17-04-01919), the National Key Research and Development Project of China (2016YFE0205800), the National Science and Technology Major Project (2016ZX10004222), intramural special grants for influenza virus research from the Chinese Academy of Sciences (KJZD-EW-L15). YB is supported by the Youth Innovation Promotion Association of Chinese Academy of Sciences (CAS) (2017122). WS was supported by the Taishan Scholars program of Shandong Province (ts201511056). The authors thank Thijs Kuiken and Peter van Run from the Department of Viroscience, Erasmus MC for assistance in the IHC analysis, and Vladimir Petrov from the Federal Research Center of Fundamental and Translational Medicine for proofreading the manuscript.


Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Animal and Human Rights Statement

The work was performed in accordance with the ethical standards of laboratory animal treatment (Directive 2010/63/EU of the European Parliament and of the Council of 22 September 2010 on the protection of animals used for scientific purposes), the International Guiding Principles for Biomedical Research Involving Animals (1985), ethical norms for handling animals approved by the Biomedical Ethical Committee of the Federal Research Center for Fundamental and Translational Medicine (No. 25 of 19.11.2012) and The Rules of Laboratory Practice in the Russian Federation (Order of the Ministry of Health of the Russian Federation No.267 of 19.06.2003).

Keywords: Avian Influenza; H4N6; Russia; Seals.