Search Results - "Salaheldin, Ahmed H"

Multiple Introductions of Influenza A(H5N8) Virus into Poultry, Egypt, 2017 by Salaheldin, Ahmed H, El-Hamid, Abd, Elbestawy, Ahmed R, Veits, Jutta, Hafez, Hafez M, Mettenleiter, Thomas C, Abdelwhab, Elsayed M

“…After high mortality rates among commercial poultry were reported in Egypt in 2017, we genetically characterized 4 distinct influenza A(H5N8) viruses isolated…”
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Isolation of Genetically Diverse H5N8 Avian Influenza Viruses in Poultry in Egypt, 2019–2021 by Salaheldin, Ahmed H, Elbestawy, Ahmed R, Abdelkader, Abdelkader M, Sultan, Hesham A, Ibrahim, Awad A, Abd El-Hamid, Hatem S, Abdelwhab, Elsayed M

“…The global spread of avian influenza virus (AIV) of clade 2.3.4.4b since 2016 has caused severe losses in wild birds and poultry and has posed a risk for the…”
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Insertion of Basic Amino Acids in the Hemagglutinin Cleavage Site of H4N2 Avian Influenza Virus (AIV)-Reduced Virus Fitness in Chickens is Restored by Reassortment with Highly Pathogenic H5N1 AIV by Gischke, Marcel, Ulrich, Reiner, I Fatola, Olanrewaju, Scheibner, David, Salaheldin, Ahmed H, Crossley, Beate, Böttcher-Friebertshäuser, Eva, Veits, Jutta, Mettenleiter, Thomas C, Abdelwhab, Elsayed M

“…Highly pathogenic (HP) avian influenza viruses (AIVs) are naturally restricted to H5 and H7 subtypes with a polybasic cleavage site (CS) in hemagglutinin (HA)…”
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Isolation, Molecular, and Histopathological Patterns of a Novel Variant of Infectious Bursal Disease Virus in Chicken Flocks in Egypt by Salaheldin, Ahmed H, Abd El-Hamid, Hatem S, Ellakany, Hany F, Mohamed, Mostafa A, Elbestawy, Ahmed R

“…After an extended period of detecting classical virulent, attenuated, and very virulent IBDV, a novel variant (nVarIBDV) was confirmed in Egypt in this study…”
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Isolation and genetic characterization of a novel 2.2.1.2a H5N1 virus from a vaccinated meat-turkeys flock in Egypt by Salaheldin, Ahmed H, Veits, Jutta, Abd El-Hamid, Hatem S, Harder, Timm C, Devrishov, Davud, Mettenleiter, Thomas C, Hafez, Hafez M, Abdelwhab, Elsayed M

“…Vaccination of poultry to control highly pathogenic avian influenza virus (HPAIV) H5N1 is used in several countries. HPAIV H5N1 of clade 2.2.1 which is endemic…”
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Potential Biological and Climatic Factors That Influence the Incidence and Persistence of Highly Pathogenic H5N1 Avian Influenza Virus in Egypt by Salaheldin, Ahmed H, Kasbohm, Elisa, El-Naggar, Heba, Ulrich, Reiner, Scheibner, David, Gischke, Marcel, Hassan, Mohamed K, Arafa, Abdel-Satar A, Hassan, Wafaa M, Abd El-Hamid, Hatem S, Hafez, Hafez M, Veits, Jutta, Mettenleiter, Thomas C, Abdelwhab, Elsayed M

“…Highly pathogenic H5N1 avian influenza virus (A/H5N1) of clade 2.2.1 is endemic in poultry in Egypt where the highest number of human infections worldwide was…”
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Impact of Mutations in the Hemagglutinin of H10N7 Viruses Isolated from Seals on Virus Replication in Avian and Human Cells by Dittrich, Anne, Scheibner, David, Salaheldin, Ahmed H, Veits, Jutta, Gischke, Marcel, Mettenleiter, Thomas C, Abdelwhab, Elsayed M

“…Wild birds are the reservoir for low-pathogenic avian influenza viruses, which are frequently transmitted to domestic birds and occasionally to mammals. In…”
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Evaluating the effect of Spirulina platensis on the immune response of broiler chickens to various vaccines and virulent Newcastle disease virus challenge by Awad, Ashraf M., Sedeik, Mahmoud E., Salaheldin, Ahmed H., Goda, Raghda I., El-Shall, Nahed A.

“…This study investigated the efficacy of co-administration of Spirulina platensis (SP) with vaccines on the immune response to Avian influenza (AI), Infectious…”
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Variable impact of the hemagglutinin polybasic cleavage site on virulence and pathogenesis of avian influenza H7N7 virus in chickens, turkeys and ducks by Scheibner, David, Ulrich, Reiner, Fatola, Olanrewaju I., Graaf, Annika, Gischke, Marcel, Salaheldin, Ahmed H., Harder, Timm C., Veits, Jutta, Mettenleiter, Thomas C., Abdelwhab, Elsayed M.

“…Avian influenza viruses (AIV) are classified into 16 hemagglutinin (HA; H1-H16) and 9 neuraminidase (NA; N1-N9) subtypes. All AIV are low pathogenic (LP) in…”
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Genetic Sequence and Pathogenicity of Infectious Bursal Disease Virus in Chickens in Egypt During 2017-2021 by Elbestawy, Ahmed R, El-Hamid, Hatem S Abd, Ellakany, Hany F, Gado, Ahmed R, El-Rayes, Shady H, Salaheldin, Ahmed H

“…The continued circulation of infectious bursal disease virus (IBDV) in Egypt, despite the use of various vaccines, is a serious problem that requires…”
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Phenotypic effects of mutations observed in the neuraminidase of human origin H5N1 influenza A viruses by Scheibner, David, Salaheldin, Ahmed H, Bagato, Ola, Zaeck, Luca M, Mostafa, Ahmed, Blohm, Ulrike, Müller, Christin, Eweas, Ahmed F, Franzke, Kati, Karger, Axel, Schäfer, Alexander, Gischke, Marcel, Hoffmann, Donata, Lerolle, Solène, Li, Xuguang, Abd El-Hamid, Hatem S, Veits, Jutta, Breithaupt, Angele, Boons, Geert-Jan, Matrosovich, Mikhail, Finke, Stefan, Pleschka, Stephan, Mettenleiter, Thomas C, de Vries, Robert P, Abdelwhab, Elsayed M

“…Global spread and regional endemicity of H5Nx Goose/Guangdong avian influenza viruses (AIV) pose a continuous threat for poultry production and zoonotic,…”
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Leucocytozoon caulleryi in Broiler Chicken Flocks: Clinical, Hematologic, Histopathologic, and Molecular Detection by Elbestawy, Ahmed R, Ellakany, Hany F, Abd El-Hamid, Hatem S, Gado, Ahmed R, Geneedy, Amr M, Noreldin, Ahmed E, Menshawy, Soad, El-Neweshy, Mahmoud, El-Shall, Nahed A, Salaheldin, Ahmed H

“…Despite the vast Egyptian poultry production, scanty information is available concerning the infection of haemprotozoan parasites as pathogens in commercial…”
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Genetic incompatibilities and reduced transmission in chickens may limit the evolution of reassortants between H9N2 and panzootic H5N8 clade 2.3.4.4 avian influenza virus showing high virulence for mammals by Mostafa, Ahmed, Blaurock, Claudia, Scheibner, David, Müller, Christin, Blohm, Ulrike, Schäfer, Alexander, Gischke, Marcel, Salaheldin, Ahmed H, Nooh, Hanaa Z, Ali, Mohamed A, Breithaupt, Angele, Mettenleiter, Thomas C, Pleschka, Stephan, Abdelwhab, Elsayed M

“…Abstract The unprecedented spread of H5N8- and H9N2-subtype avian influenza virus (AIV) in birds across Asia, Europe, Africa, and North America poses a serious…”
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Multiple Introductions of Influenza A by Salaheldin, Ahmed H, Hamid, Hatem Salah Abd El, Elbestawy, Ahmed R, Veits, Jutta, Hafez, Hafez M, Mettenleiter, Thomas C, Abdelwhab, Elsayed M

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