Humoral immunogenicity and efficacy of a single dose of ChAdOx1 MERS vaccine candidate in dromedary camels

MERS-CoV seronegative and seropositive camels received a single intramuscular dose of ChAdOx1 MERS, a replication-deficient adenoviral vectored vaccine expressing MERS-CoV spike protein, with further groups receiving control vaccinations. Infectious camels with active naturally acquired MERS-CoV inf...

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Main Authors: Alharbi, N, Qasim, I, Almasoud, A, Aljami, H, Alenazi, M, Alhafufi, A, Aldibasi, O, Hashem, A, Kasem, S, Albrahim, R, Aldubaib, M, Almansour, A, Temperton, N, Kupke, A, Becker, S, Abu-Obaidah, A, Alkarar, A, Yoon, I, Azhar, E, Lambe, T, Bayoumi, F, Aldowerij, A, Ibrahim, O, Gilbert, S, Balkhy, H
Format: Journal article
Language:English
Published: Springer Nature 2019
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author Alharbi, N
Qasim, I
Almasoud, A
Aljami, H
Alenazi, M
Alhafufi, A
Aldibasi, O
Hashem, A
Kasem, S
Albrahim, R
Aldubaib, M
Almansour, A
Temperton, N
Kupke, A
Becker, S
Abu-Obaidah, A
Alkarar, A
Yoon, I
Azhar, E
Lambe, T
Bayoumi, F
Aldowerij, A
Ibrahim, O
Gilbert, S
Balkhy, H
author_facet Alharbi, N
Qasim, I
Almasoud, A
Aljami, H
Alenazi, M
Alhafufi, A
Aldibasi, O
Hashem, A
Kasem, S
Albrahim, R
Aldubaib, M
Almansour, A
Temperton, N
Kupke, A
Becker, S
Abu-Obaidah, A
Alkarar, A
Yoon, I
Azhar, E
Lambe, T
Bayoumi, F
Aldowerij, A
Ibrahim, O
Gilbert, S
Balkhy, H
author_sort Alharbi, N
collection OXFORD
description MERS-CoV seronegative and seropositive camels received a single intramuscular dose of ChAdOx1 MERS, a replication-deficient adenoviral vectored vaccine expressing MERS-CoV spike protein, with further groups receiving control vaccinations. Infectious camels with active naturally acquired MERS-CoV infection, were co-housed with the vaccinated camels at a ratio of 1:2 (infected:vaccinated); nasal discharge and virus titres were monitored for 14 days. Overall, the vaccination reduced virus shedding and nasal discharge (p = 0.0059 and p = 0.0274, respectively). Antibody responses in seropositive camels were enhancedby the vaccine; these camels had a higher average age than seronegative. Older seronegative camels responded more strongly to vaccination than younger animals; and neutralising antibodies were detected in nasal swabs. Further work is required to optimise vaccine regimens for younger seronegative camels.
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spelling oxford-uuid:d446b49f-01e1-410d-8a4f-603a4e649a7e2022-03-27T08:17:22ZHumoral immunogenicity and efficacy of a single dose of ChAdOx1 MERS vaccine candidate in dromedary camelsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:d446b49f-01e1-410d-8a4f-603a4e649a7eEnglishSymplectic Elements at OxfordSpringer Nature2019Alharbi, NQasim, IAlmasoud, AAljami, HAlenazi, MAlhafufi, AAldibasi, OHashem, AKasem, SAlbrahim, RAldubaib, MAlmansour, ATemperton, NKupke, ABecker, SAbu-Obaidah, AAlkarar, AYoon, IAzhar, ELambe, TBayoumi, FAldowerij, AIbrahim, OGilbert, SBalkhy, HMERS-CoV seronegative and seropositive camels received a single intramuscular dose of ChAdOx1 MERS, a replication-deficient adenoviral vectored vaccine expressing MERS-CoV spike protein, with further groups receiving control vaccinations. Infectious camels with active naturally acquired MERS-CoV infection, were co-housed with the vaccinated camels at a ratio of 1:2 (infected:vaccinated); nasal discharge and virus titres were monitored for 14 days. Overall, the vaccination reduced virus shedding and nasal discharge (p = 0.0059 and p = 0.0274, respectively). Antibody responses in seropositive camels were enhancedby the vaccine; these camels had a higher average age than seronegative. Older seronegative camels responded more strongly to vaccination than younger animals; and neutralising antibodies were detected in nasal swabs. Further work is required to optimise vaccine regimens for younger seronegative camels.
spellingShingle Alharbi, N
Qasim, I
Almasoud, A
Aljami, H
Alenazi, M
Alhafufi, A
Aldibasi, O
Hashem, A
Kasem, S
Albrahim, R
Aldubaib, M
Almansour, A
Temperton, N
Kupke, A
Becker, S
Abu-Obaidah, A
Alkarar, A
Yoon, I
Azhar, E
Lambe, T
Bayoumi, F
Aldowerij, A
Ibrahim, O
Gilbert, S
Balkhy, H
Humoral immunogenicity and efficacy of a single dose of ChAdOx1 MERS vaccine candidate in dromedary camels
title Humoral immunogenicity and efficacy of a single dose of ChAdOx1 MERS vaccine candidate in dromedary camels
title_full Humoral immunogenicity and efficacy of a single dose of ChAdOx1 MERS vaccine candidate in dromedary camels
title_fullStr Humoral immunogenicity and efficacy of a single dose of ChAdOx1 MERS vaccine candidate in dromedary camels
title_full_unstemmed Humoral immunogenicity and efficacy of a single dose of ChAdOx1 MERS vaccine candidate in dromedary camels
title_short Humoral immunogenicity and efficacy of a single dose of ChAdOx1 MERS vaccine candidate in dromedary camels
title_sort humoral immunogenicity and efficacy of a single dose of chadox1 mers vaccine candidate in dromedary camels
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