Author

Ahmed M. Elsayed

Texas Biomedical Research Institute

Listed by name: these papers carry no ORCID for this author, so different people with the same name may be mixed together.

Biology Disciplines

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Microbiology· 3 Immunology· 1

Signature Assays, Organisms & Methods

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Approach:experimental assay· 4 Research Focus:host-pathogen & immune response· 3 Organism:mouse· 3 Assay:proteomics· 2 Research Focus:drug response / drug discovery· 1 Organism:human· 1

Frequent Co-Authors

Luis Martínez‐SobridoiD· 4 shared Ramya S. BarreiD· 3 shared Adolfo García‐SastreiD· 2 shared Aitor NogalesiD· 2 shared Chengjin YeiD· 2 shared Esteban M. CastroiD· 2 shared Vinay ShivannaiD· 2 shared Alejandro Martín-ToribioiD· 1 shared

Activity by Year

2026-2026 · peak 4/yr

Co-Author Collaboration Network

10 top collaborators · 31 mutual co-author links

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4 shared papersMicrobiology

Luis Martínez‐SobridoORCID

Mutual co-authors in cluster

Author profile →

4 papers

Recent·Most cited

A bireporter recombinant SARS-CoV-2 Omicron BA.5 for in vitro and in vivo studies

Esteban M. Castro, Ramya S. Barre, Chengjin Ye, Brian Imbiakha, Shahrzad Ezzatpour, Anastasija Čupić, Mark R. Walter, James J. Kobie, Richard Karl Plemper, Adolfo García‐Sastre, Ahmed M. Elsayed, Hector C. Aguilar, Luis Martínez‐Sobrido

This paper develops a bireporter recombinant SARS-CoV-2 Omicron BA.5 strain for tracking viral infections and testing antivirals and neutralizing antibodies in vitro and in vivo.

Microbiology Spectrum · Sep 10, 2026Peer-reviewedMicrobiology

A One-Shot Multivalent Live-Attenuated Candidate Influenza Vaccine against Divergent Zoonotic H5N1 Clades

Ahmed M. Elsayed, Ramya S. Barre, Arash Rahmani, Ruby A. Escobedo, Trushar Jeevan, Himadri Nath, Esteban M. Castro, Vinay Shivanna, Aitor Nogales, James Kobie, Richard J. Webby, Elsayed M. Abdelwhab, Adolfo García‐Sastre, Luis Martínez‐Sobrido

This paper develops a multivalent live-attenuated influenza vaccine that provides broad protection against multiple H5N1 clades by incorporating HA and NA from representative clades, showing robust immune responses and protection in mice.

bioRxiv · Aug 3, 2026 · PreprintMicrobiology

Neuraminidase-Based Cross-Protective Immunity against H5N1 Influenza Viruses in Humans

Iván Sanz-Muñoz, Carlos J. Ciria-Gil, Alejandro Martín-Toribio, Marina Toquero-Asensio, Javier Sánchez-Martínez, Carla Rodríguez-Crespo, Marta Hernández, Iris Barragan-Martin, Sara Landeras-Bueno, José María Eiros, Ahmed M. Elsayed, Luis Martínez‐Sobrido, Aitor Nogales

This study shows that NA-specific antibodies are present in human sera and can be boosted by seasonal vaccination against H5N1 influenza viruses.

bioRxiv · Jun 12, 2026 · PreprintImmunology

A single PA-X mutation in bovine-origin H5N1 influenza virus reduces pathogenicity in mice

Nathaniel D. Jackson, Mahmoud M. Bayoumi, Vinay Shivanna, Anna Allué‐Guardia, Ashley Gay-Cobb, Ramya S. Barre, Jordi Bertran Torrelles, Chengjin Ye, Ahmed M. Elsayed, Luis Martínez‐Sobrido

This paper identifies a PA-X mutation in H5N1 influenza virus that reduces pathogenicity in mice by modulating immune responses rather than polymerase activity.

bioRxiv · May 10, 2026 · PreprintMicrobiology