생명과학회지 (Journal of Life Science)

  • 제28권8호
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  • Pages.962-968
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  • 2018
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  • 1225-9918(pISSN)
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  • 2287-3406(eISSN)
한국생명과학회 (Korean Society of Life Science)
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2016년 한국 야생조류에서 분리한 H7N7 조류인플루엔자 바이러스 유전자 분석

Genetic Analysis of H7N7 Avian Influenza Virus Isolated From Waterfowl in South Korea in 2016

  • Dires, Berihun (Laboratory of Influenza Research, College of Veterinary Medicine, Chungnam National University) ;
  • Seo, Sang Heui (Laboratory of Influenza Research, College of Veterinary Medicine, Chungnam National University)
  • 투고 : 2018.04.23
  • 심사 : 2018.06.10
  • 발행 : 2018.08.30
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초록

A형 인플루엔자바이러스는 야생조류에 존재하며, 사람, 돼지, 가금 및 다른 포유류등 다양한 숙주를 감염한다. 본 연구에서는, 2016년 한국 서쪽의 철새도래지에서 채취한 철새 분변에서 재조합된 새로운 H7N7 조류인플루엔자를 분리하였으며 이 바이러스의 8개 유전자를 분석하였다. 분리된 A/waterfowl/Korea/S017/2016(H7N7) 바이러스의 유전자 분석 결과 이 바이러스는 야생조류 및 가금 오리에서 유래한 조류인플루엔자로 구성된 재조합된 유전자를 가지고 있었다. 계통 분석결과 이 바이러스는 유럽과 아시아계에 속하였다. 조류인플루엔자 바이러스가 계속 진화를 하고 H7 형 조류인플루엔자는 고 병원성 조류인플루엔자로 변하여 사람과 동물에게 커다란 위협이 될 수 있기에 계속 된 역학조사가 필요하다.

Type A influenza virus is circulating in wild birds and can infect wide ranges of hosts such as humans, pigs, domestic birds, and other mammals. Many subtypes of avian influenza viruses are circulating in aquatic birds. Most avian influenza viruses found in aquatic birds are low pathogenic avian influenza viruses. Highly pathogenic avian influenza viruses have been found in waterfowls since 2005. It is known that H5 and H7 subtypes of avian influenza viruses can be mutated into highly pathogenic avian influenza viruses in domestic poultry. In this study, we isolated novel reassortant H7N7 avian influenza virus from the fecal materials of migratory birds in the Western part of South Korea in 2016, and analyzed the sequences of all its eight genes. The genetic analysis of our isolate, A/waterfowl/Korea/S017/2016 (H7N7) indicates that it was reassortant avian influenza virus containing genes of both avian influenza viruses of wild birds and domestic ducks. Phylogenetic analysis showed that our isolate belongs to Eurasian lineage of avian influenza virus. Since avian influenza viruses continue to evolve, and H7-subtype avian influenza virus can mutate into the highly pathogenic avian influenza viruses, which cause the great threat to humans and animals, we closely survey the infections in both wild birds, and domestic poultry, and mammals.

키워드

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