A5083294153- Viral gastroenteritis research and epidemiology
- Animal Virus Infections Studies
- Viral Infections and Vectors
- Influenza Virus Research Studies
- Animal Disease Management and Epidemiology
- Hepatitis Viruses Studies and Epidemiology
- Plant Virus Research Studies
- Viral Infections and Immunology Research
- Coccidia and coccidiosis research
- Virology and Viral Diseases
- Respiratory viral infections research
- Veterinary medicine and infectious diseases
- Yersinia bacterium, plague, ectoparasites research
- Zoonotic diseases and public health
All-Russian Research Institute for Animal Health
2011-2023
Infectious bronchitis virus (IBV) isolates recovered in Russia, Ukraine, and Kazakhstan between 2007 2010 were subjected to molecular characterization compared with those isolated a decade ago. The IBV genome was detected 202 out of 605 field samples from chickens various clinical signs. Partial sequencing the S1 gene revealed 153 vaccine strains 49 several genetic groups. Massachusetts, 793/B D274 remained predominant genotypes along QX, whereas B1648, Italy-02, Arkansas variants accounted...
A total of 79 liver samples from clinically sick and asymptomatic chickens were tested for avian hepatitis E virus (aHEV). Samples received 19 farms, five which positive with primers targeting the ORF2 capsid gene. The phylogenetic analysis a 242-base-pair fragment demonstrated that Russian aHEV isolates share between 78.2 96.2% over sequenced, whereas nucleotide sequence identities other representatives GeneBank varied 76.3 to 96.2%. homology studied viruses swine 46.9 48.1%. most divergent...
In 2021, several isolates of the H5N5 avian influenza virus (AIV) were detected in Europe and Russian Federation, which differed from those 2020. Genetic analysis revealed a relationship between highly pathogenic subtype, Europe, some Federation territory 2020-2021: it was shown that both originated Caspian Sea regions around autumn The appearance subtype viruses spring 2021 not associated with mass migration birds Africa. results presence deletion stem neuraminidase bp 139 204 (open reading...
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...
An exogenous "armoured" PCR internal control (IC) short RNA was analyzed in conjunction with real-time RT-PCR method for diagnosis of avian influenza. The resistance to nucleases and increased physical stability the IC ensured using branched polyethyleneimine (PEI) which complex IC-RNA. option add directly pathological material suspensions allows measurement nucleic acids extraction efficiency. Stability armoured RNA-IC during storage tissue suspension preparation shown. advantage...
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...
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...
Russian commercial poultry industry is tightly tied to international trade.To date, avian hepatitis E virus (aHEV) has been isolated in Australia, US, Spain, Hungary, etc., being a serious threat poultry.In hens, aHEV affects liver and immune system, namely spleen thymus, disrupting homeostasis hematological parameters.In Russia, genetic identification was first reported 2009, but the current epizootic situation remains be unknown.In this paper we report results of analysis 415 samples from...
Russian commercial poultry industry is tightly tied to international trade. To date, avian hepatitis E virus (aHEV) has been isolated in Australia, US, Spain, Hungary, etc., being a serious threat poultry. In hens, aHEV affects liver and immune system, namely spleen thymus, disrupting homeostasis hematological parameters. Russia, genetic identification was first reported 2009, but the current epizootic situation remains be unknown. this paper we report results of analysis 415 samples from...
Laboratory diagnosis is a crucial component in implementation of the set anti-epidemic measures aimed at contagious animal disease control. The need for unswerving trust quality laboratory performance matter importance not only service providers and customers, but also inspecting organizations, accreditation bodies, etc. that establish requirements diagnostic laboratories. Incorrect test results can lead to misdiagnosis and, therefore, grave consequences. One forms experimental verification...
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...