Investigation of suspected Newcastle disease (ND) outbreaks in Egypt uncovers a high virus velogenic ND virus burden in small-scale holdings and the presence of multiple pathogens
| Autor: | Timm C. Harder, Martin Beer, Kati Franzke, Mohammed Ghezlan, Alaa Abd El Razik, Ibrahim Moharam, Christian Grund, Hesham Sultan, Clement Meseko |
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| Rok vydání: | 2019 |
| Předmět: |
medicine.medical_specialty
Genotype 040301 veterinary sciences Newcastle Disease Infectious bronchitis virus Newcastle disease virus Chick Embryo medicine.disease_cause Newcastle disease Molecular taxonomy Virus Disease Outbreaks 0403 veterinary science Food Animals Epidemiology medicine Animals Phylogeny Poultry Diseases General Immunology and Microbiology biology Coinfection Vaccination 0402 animal and dairy science Outbreak Viral Vaccines 04 agricultural and veterinary sciences biology.organism_classification Avian infectious bronchitis 040201 dairy & animal science Virology Influenza A virus subtype H5N1 Vaccines Inactivated Influenza A virus Egypt Female Animal Science and Zoology Chickens |
| Zdroj: | Avian Pathology. 48:406-415 |
| ISSN: | 1465-3338 0307-9457 |
| DOI: | 10.1080/03079457.2019.1612852 |
| Popis: | Highly contagious Newcastle disease (ND) is associated with devastating outbreaks with highly variable clinical signs among gallinaceous birds. In this study we aimed to verify clinical ND suspicions in poultry holdings in Egypt suffering from respiratory distress and elevated mortality, comparing two groups of ND-vaccinated poultry holdings in three governorates. Besides testing for Newcastle disease virus (NDV), samples were screened for infectious bronchitis virus (IBV) and avian influenza virus (AIV) by RT-qPCR as well as by non-directed cell-culture approach on LMH-cells. Virulent NDV was confirmed only in group A ( |
| Databáze: | OpenAIRE |
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