С. Н. Колосов

ORCID: 0000-0002-8467-180X
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About
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Research Areas
  • Viral Infections and Vectors
  • Virology and Viral Diseases
  • Animal Virus Infections Studies
  • Influenza Virus Research Studies
  • Viral gastroenteritis research and epidemiology
  • Herpesvirus Infections and Treatments
  • Coccidia and coccidiosis research
  • Plant Virus Research Studies
  • Microbial infections and disease research
  • Yersinia bacterium, plague, ectoparasites research
  • Mosquito-borne diseases and control
  • interferon and immune responses
  • Animal Disease Management and Epidemiology
  • Respiratory viral infections research
  • Vector-Borne Animal Diseases
  • Aquaculture disease management and microbiota
  • Syphilis Diagnosis and Treatment

All-Russian Research Institute for Animal Health
2010-2023

Government of Malaysia
2013

Several Avian paramyxoviruses 1 (synonymous with Newcastle disease virus or NDV, used hereafter) classification systems have been proposed for strain identification and differentiation. These pioneered efforts; however, they were based on different approaches lacked objective criteria the differentiation of isolates. differences created discrepancies among systems, rendering discussions comparisons across studies difficult. Although a system that was by Diel co-workers in 2012, ample...

10.1016/j.meegid.2019.103917 article EN cc-by Infection Genetics and Evolution 2019-06-11

Monitoring programs for highly dangerous avian diseases in the Russian Federation from 2001 to 2009 detected 77 samples that were PCR positive paramyxovirus serotype-1 (APMV-1) sick or dead feral and domestic pigeons. Nucleotide sequences of fusion (F) gene, including a nucleotide sequence encoding F protein cleavage site, determined these isolates. All studied isolates possessed virulent F0 sites (112KRKKRF117, 112RRQKRF117, 112KRQKRF117). Intracerebral pathogenicity index (ICPI) values...

10.1637/10246-051112-reg.1 article ES Avian Diseases 2013-03-01

The genetic diversity of the pvpA gene Mycoplasma gallisepticum (MG) samples originating from commercial chickens was investigated. In present study, we evaluated variability 26 field MG detected in and turkeys 18 regions Russia compared them to reference strains available GenBank. Genetic by partial nucleotide sequencing gene, which encodes a putative cytadhesin protein. Comparisons with isolates United States, Australia, China, Iran using sequence analysis PCR products showed that Russian...

10.1637/8989-070909-resnote.1 article EN Avian Diseases 2010-06-01

In April 2008 an avian influenza outbreak was diagnosed in Primorsky Krai, Russia, during the spring migration of wild birds, and A/Chicken/Primorsky/85/08 H5N1 isolate recovered. The virus had more than 99% genetic identity with A/Whooper Swan/Hokkaido/1/08 Swan/Hokkaido/2/08 viruses that were isolated Japan. amino acid sequence hemagglutinin cleavage site (PQRERRRKRGLF) intravenous pathotyping index value (IVPI 2.80) determined; on this basis characterized as highly pathogenic. gene shown...

10.1637/8732-032509-case.1 article EN Avian Diseases 2010-03-01

Newcastle disease virus (NDV, Avian orthoavulavirus type 1, AOAV-1) is a contagious high-impact poultry pathogen with infections detected worldwide. In the present study, 19,500 clinical samples from wild bird species and collected 28 regions of Russia between 2017 2021 were screened for presence AOAV-1 genome. NDV RNA was in 15 birds 63 poultry. All isolates partial sequence fusion (F) gene that included cleavage site. Phylogenetic analysis demonstrated lentogenic I.1.1, I.1.2.1, II...

10.3390/vaccines11061032 article EN cc-by Vaccines 2023-05-27

Avian infectious bronchitis virus is a cause of major economic losses in poultry industry. However, control the very complicated due to its high variability. The mutation frequency hypervariable region S1 gene isolated from vaccinated birds annually amounts 1.5%. Long-term observations circulation IBV isolates detected number farms demonstrated that genetic lineages circulating on could eventually change. This stipulates need for continuous monitoring prevention schedule optimization. paper...

10.29326/2304-196x-2018-3-26-30-34 article EN cc-by Veterinary Science Today 2018-10-03

Avian infectious bronchitis is one of the most common viral infections causing enormous economic losses in global poultry industry. Due to lack mechanisms correct errors during genome replication, virus can quickly mutate and generate new strains. This facilitated by widespread use live vaccines, simultaneous circulation field viruses belonging different serotypes flock rapid spread virus. Previous studies avian strains isolates identified Russian Federation farms showed that 50% samples...

10.29326/2304-196x-2020-1-32-44-50 article EN cc-by Veterinary Science Today 2020-03-30

Currently, N2 subtype avian influenza (AI) virus actively circulates in domestic and wild bird populations is regularly detected China, other Asian countries Russia, particularly combination with H9 hemagglutinin. Therefore, a method for rapid detection of the said infectious agent urgently required. Data on oligonucleotide primer selection reverse transcription real-time polymerase chain reaction condition optimization AI are presented paper. Modified primers probe proposed by B. Hoffmann...

10.29326/2304-196x-2020-3-34-186-192 article EN cc-by Veterinary Science Today 2020-09-16

Avian influenza is a highly dangerous viral disease that causes huge economic damage to poultry farming. Currently, virulent virus with N8 neur- aminidase subtype quite often detected in populations of domestic and wild birds various countries the world. The article provides data on complete nucleotide sequences neuraminidase gene pathogenic avian isolates recovered second half 2020 from pathological material received four regions Russian Federation. conducted research showed isolated was...

10.29326/2304-196x-2021-10-4-301-307 article EN cc-by Veterinary Science Today 2021-11-19
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