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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Lancet
2020 ; 395
(10240
): 1845-1854
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Safety, tolerability, and immunogenicity of a recombinant adenovirus type-5
vectored COVID-19 vaccine: a dose-escalation, open-label, non-randomised,
first-in-human trial
#MMPMID32450106
Zhu FC
; Li YH
; Guan XH
; Hou LH
; Wang WJ
; Li JX
; Wu SP
; Wang BS
; Wang Z
; Wang L
; Jia SY
; Jiang HD
; Wang L
; Jiang T
; Hu Y
; Gou JB
; Xu SB
; Xu JJ
; Wang XW
; Wang W
; Chen W
Lancet
2020[Jun]; 395
(10240
): 1845-1854
PMID32450106
show ga
BACKGROUND: A vaccine to protect against COVID-19 is urgently needed. We aimed to
assess the safety, tolerability, and immunogenicity of a recombinant adenovirus
type-5 (Ad5) vectored COVID-19 vaccine expressing the spike glycoprotein of a
severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) strain. METHODS: We
did a dose-escalation, single-centre, open-label, non-randomised, phase 1 trial
of an Ad5 vectored COVID-19 vaccine in Wuhan, China. Healthy adults aged between
18 and 60 years were sequentially enrolled and allocated to one of three dose
groups (5?×?10(10), 1?×?10(11), and 1·5?×?10(11) viral particles) to receive an
intramuscular injection of vaccine. The primary outcome was adverse events in the
7 days post-vaccination. Safety was assessed over 28 days post-vaccination.
Specific antibodies were measured with ELISA, and the neutralising antibody
responses induced by vaccination were detected with SARS-CoV-2 virus
neutralisation and pseudovirus neutralisation tests. T-cell responses were
assessed by enzyme-linked immunospot and flow-cytometry assays. This study is
registered with ClinicalTrials.gov, NCT04313127. FINDINGS: Between March 16 and
March 27, 2020, we screened 195 individuals for eligibility. Of them, 108
participants (51% male, 49% female; mean age 36·3 years) were recruited and
received the low dose (n=36), middle dose (n=36), or high dose (n=36) of the
vaccine. All enrolled participants were included in the analysis. At least one
adverse reaction within the first 7 days after the vaccination was reported in 30
(83%) participants in the low dose group, 30 (83%) participants in the middle
dose group, and 27 (75%) participants in the high dose group. The most common
injection site adverse reaction was pain, which was reported in 58 (54%) vaccine
recipients, and the most commonly reported systematic adverse reactions were
fever (50 [46%]), fatigue (47 [44%]), headache (42 [39%]), and muscle pain (18
[17%]. Most adverse reactions that were reported in all dose groups were mild or
moderate in severity. No serious adverse event was noted within 28 days
post-vaccination. ELISA antibodies and neutralising antibodies increased
significantly at day 14, and peaked 28 days post-vaccination. Specific T-cell
response peaked at day 14 post-vaccination. INTERPRETATION: The Ad5 vectored
COVID-19 vaccine is tolerable and immunogenic at 28 days post-vaccination.
Humoral responses against SARS-CoV-2 peaked at day 28 post-vaccination in healthy
adults, and rapid specific T-cell responses were noted from day 14
post-vaccination. Our findings suggest that the Ad5 vectored COVID-19 vaccine
warrants further investigation. FUNDING: National Key R&D Program of China,
National Science and Technology Major Project, and CanSino Biologics.
|Adenoviridae
[MESH]
|Adolescent
[MESH]
|Adult
[MESH]
|Antibodies, Neutralizing/blood
[MESH]
|Antibodies, Viral/blood
[MESH]
|Betacoronavirus
[MESH]
|COVID-19
[MESH]
|COVID-19 Vaccines
[MESH]
|China
[MESH]
|Coronavirus Infections/*prevention & control
[MESH]
|Enzyme-Linked Immunosorbent Assay
[MESH]
|Female
[MESH]
|Humans
[MESH]
|Immunity, Cellular
[MESH]
|Immunity, Humoral
[MESH]
|Injections, Intramuscular
[MESH]
|Male
[MESH]
|Middle Aged
[MESH]
|Pandemics/*prevention & control
[MESH]
|Pneumonia, Viral/*prevention & control
[MESH]
|SARS-CoV-2
[MESH]
|T-Lymphocytes/immunology
[MESH]
|Vaccines, Synthetic/administration & dosage/adverse effects/therapeutic use
[MESH]
|Viral Vaccines/*administration & dosage/adverse effects/therapeutic use
[MESH]