International meetings, wvpa matters and announcements.

International meetings, wvpa matters and announcements. Avian Pathol. 2013 Feb;42(1):85 Authors: PMID: 23391186 [PubMed - in process]
Source: Avian Pathology - Category: Pathology Tags: Avian Pathol Source Type: research

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The pneumomediastinum and subcutaneous emphysema can repetitively occur in human H5N6 virus pneumonia. Prompt treatment of this uncommon complication is important for successful rescue of patients with H5N6 virus pneumonia. AbstractThe pneumomediastinum and subcutaneous emphysema can repetitively occur in human H5N6 virus pneumonia. Prompt treatment of this uncommon complication is important for successful rescue of patients with H5N6 virus pneumonia.
Source: Clinical Case Reports - Category: General Medicine Authors: Tags: CLINICAL IMAGE Source Type: research
ing Liao Peirong Jiao H5Nx viruses have continuously emerged in the world, causing poultry industry losses and posing a potential public health risk. Here, we studied the phylogeny, pathogenicity, transmission, and immune response of four H5N6 avian influenza viruses in chickens and mice, which were isolated from waterfowl between 2013 and 2014. Their HA genes belong to Clade 2.3.4.4, circulated in China since 2008. Their NA genes fall into N6-like/Eurasian sublineage. Their internal genes originated from different H5N1 viruses. The results suggested that the four H5N6 viruses were reassortants of the H5N1 and H6N6 v...
Source: Viruses - Category: Virology Authors: Tags: Article Source Type: research
Hyun Park A novel avian influenza virus (A/wild duck/Korea/K102/2018) (H2N9) was isolated from wild birds in South Korea in 2018, and phylogenetic and molecular analyses were conducted on complete gene sequences obtained by next-generation sequencing. Phylogenetic analysis indicated that the hemagglutinin (HA) and neuraminidase (NA) genes of the A/wild duck/Korea/K102/2018 (H2N9) virus belonged to the Eurasian countries, whereas other internal genes (polymerase basic protein 1 (PB1), PB2, nucleoprotein (NP), polymerase acidic protein (PA), matrix protein (M), and non-structural protein (NS)) belonged to the East Asian ...
Source: Viruses - Category: Virology Authors: Tags: Article Source Type: research
Wang Peirong Jiao There were five outbreaks of H7N9 influenza virus in humans in China since it emerged in 2013, infecting >1000 people. The H7N9 low pathogenic influenza virus was inserted into four amino acids in the HA protein cleavage site to mutate into the H7N9 highly pathogenic virus. This emerging virus caused 15 outbreaks in chickens from the end of 2016 to date. Two H7N9 avian influenza virus (AIV) strains, A/chicken/Guangdong/A46/2013 (LPAIV) and A/chicken/Guangdong/Q29/2017 (HPAIV), were selected to compare the pathogenicity and transmissibility between H7N9 LPAIVs and HPAIVs in chickens. We inocul...
Source: Viruses - Category: Virology Authors: Tags: Article Source Type: research
This study was performed to evaluate the effects of omega-3 supplementation on growth performance, clinical signs, post-mortem lesions, haemagglutination inhibition (HI) antibody titres, gene expression and histopathology in quails (Coturnix coturnix japonica) infected with Newcastle disease virus (NDV) and avian influenza virus (AIV) H9N2. One hundred, 40-day-old male quails were divided into 5 groups: G1, fed a control basal diet; G2A, infected with NDV; G2B, infected with H9N2; G3A, infected with NDV and given omega-3, and G3B, infected with H9N2 and given omega-3. The dietary omega-3 supplementation was continued for 4...
Source: Comparative Biochemistry and Physiology Part C: Toxicology and Pharmacology - Category: Toxicology Source Type: research
AbstractDespite the fact that vaccine resistance has been typically considered a rare phenomenon, some episodes of vaccine failure have been reported with increasing frequency in intensively-raised livestock. Infectious bronchitis virus (IBV) is a widespread avian coronavirus, whose control relies mainly on extensive vaccine administration. Unfortunately, the continuous emergence of new vaccine-immunity escaping variants prompts the development of new vaccines. In the present work, a molecular epidemiology study was performed to evaluate the potential role of homologous vaccination in driving IBV evolution. This was undert...
Source: Veterinary Research - Category: Veterinary Research Source Type: research
Publication date: Available online 7 November 2019Source: Molecular Phylogenetics and EvolutionAuthor(s): Feng Dong, Chih-Ming Hung, Xiao-Jun YangAbstractThe geographical context of speciation is important for understanding speciation and community assembly. However, the predominant mode of speciation in the Himalayan-Hengduan Mountains (HHMs), a global biodiversity hotspot, remains unknown. Here, we examined the role of geography in speciation using four pairs of sister or closely related avian species that currently co-occur in the HHMs. While multilocus network analyses based on nine to eleven genes revealed deep splits...
Source: Molecular Phylogenetics and Evolution - Category: Molecular Biology Source Type: research
Publication date: Available online 7 November 2019Source: Molecular Phylogenetics and EvolutionAuthor(s): Andrew Peters, Shubhagata Das, Shane R. RaidalAbstractTrichomonas is a significant protist genus, and includes T. vaginalis, the most prevalent sexually transmitted non-viral infection of humans, and T. gallinae of rock doves (Columba livia), one of the earliest known avian pathogens. New Trichomonas genotypes, including T. vaginalis-like isolates, have been discovered in American columbid hosts, suggesting geographically widespread cryptic diversity of Trichomonas in pigeons and doves. We sampled 319 birds from 22 col...
Source: Molecular Phylogenetics and Evolution - Category: Molecular Biology Source Type: research
Kaijian Luo Ming Liao The prevalence and variation of the H9N2 avian influenza virus (AIV) pose a threat to public health. A total of eight viruses isolated from farmed poultry in South China during 2017–2018 were selected as representative strains for further systematic study. Phylogenetic analyses indicated that these prevalent viruses belong to the Y280-like lineage and that the internal genes are highly similar to those of recently circulating human H7N9 viruses. The receptor-binding assay showed that most of the H9N2 isolates preferentially bound to the human-like receptor, increasing the risk of the...
Source: Viruses - Category: Virology Authors: Tags: Article Source Type: research
This study reports the molecular characterisation of a GaHV-2 strain detected in a flock of Italian meat-type turkeys exhibiting visceral lymphomas. Sequencing and phylogenetic analysis of the meq gene revealed that the turkey GaHV-2 has molecular features of high virulence and genetic similarity with GaHV-2 strains recently detected in Italian commercial and backyard chickens. GaHV-2 is ubiquitous among chickens despite the vaccination, and chicken-to-turkey transmission is hypothesised due to the presence of broilers in neighbouring pens.Research highlights A GaHV-2 strain from Italian turkeys was molecularly characteris...
Source: Avian Pathology - Category: Pathology Authors: Tags: Avian Pathol Source Type: research
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