Vaccine,
Journal Year:
2023,
Volume and Issue:
41(38), P. 5525 - 5534
Published: Aug. 1, 2023
DS-5670a
is
a
vaccine
candidate
for
coronavirus
disease
2019
(COVID-19)
harnessing
novel
modality
composed
of
messenger
ribonucleic
acid
(mRNA)
encoding
the
receptor-binding
domain
(RBD)
from
spike
protein
severe
acute
respiratory
syndrome
2
(SARS-CoV-2)
encapsulated
in
lipid
nanoparticles.
Here,
we
report
safety,
immunogenicity,
and
pharmacokinetic
profile
phase
clinical
trial
healthy
adults
who
were
immunologically
naïve
to
SARS-CoV-2.The
study
consisted
an
open-label,
uncontrolled,
dose-escalation
part
double-blind,
randomized,
2-arm,
parallel-group
part.
A
total
80
Japanese
participants
assigned
receive
intramuscular
DS-5670a,
containing
either
30
or
60
µg
mRNA,
as
two
injections
administered
4
weeks
apart.
Safety
was
assessed
by
characterization
treatment-emergent
adverse
events
(TEAEs).
Immunogenicity
neutralization
titers
against
SARS-CoV-2,
anti-RBD
immunoglobulin
(Ig)G
levels,
SARS-CoV-2
spike-specific
T
cell
responses.
Plasma
parameters
also
evaluated.Most
solicited
TEAEs
mild
moderate
with
both
mRNA
doses.
Four
(10
%)
group
developed
redness
at
injection
site,
but
all
cases
resolved
without
treatment.
There
no
serious
leading
discontinuation.
Humoral
immune
responses
dose
groups
greater
than
those
observed
human
convalescent
serum;
produced
better
Neutralization
found
be
correlated
IgG
levels
(specifically
IgG1).
elicited
antigen-specific
helper
1-polarized
cellular
responses.The
mRNA-based
provided
favorable
clinically
acceptable
safety
profile.
Confirmatory
trials
are
currently
ongoing
evaluate
immunogenicity
primary
assess
when
heterologous
homologous
booster.https://jrct.niph.go.jp/latest-detail/jRCT2071210086.
Vaccines,
Journal Year:
2022,
Volume and Issue:
10(2), P. 179 - 179
Published: Jan. 24, 2022
COVID-19
vaccination
for
children
is
crucial
to
achieve
herd
immunity.
This
the
first
systematic
review
and
meta-analysis
estimate
parents’
guardians’
willingness
vaccinate
their
against
identify
determinants
of
intention.
Systematic
research
was
performed
on
two
databases
(PubMed
EMBASE)
from
inception
6
November
2021.
Acceptance
rates
were
pooled
by
use
a
random-effects
model
all
predictors
vaccine
acceptance
identified
according
health
belief
(HBM)
framework.
analysis
registered
with
PROSPERO
(CRD42021292326)
reported
in
compliance
PRISMA
guidelines.
Of
452
records,
29
eligible
studies
included
(N
=
68,327
participants).
The
estimated
worldwide
rate
61.40%
(95%
CI:
53.56–68.69%,
I2
99.3%),
ranging
21.6%
91.4%
across
countries
regions.
In
determinant
assessment,
age
parents
guardians,
access
scientific
information
recommendations,
routine
influenza
behavior,
guardians
themselves
potentially
significant
willingness.
Given
limited
quality
quantity
articles,
future
rigorous
design
will
be
necessary
confirmation
our
findings.
Frontiers in Medicine,
Journal Year:
2023,
Volume and Issue:
9
Published: Jan. 12, 2023
The
development
of
COVID-19
vaccines
has
helped
limit
the
extent
pandemic,
which
over
past
2
years
claimed
lived
millions
people.
Moderna
and
Pfizer
were
first
to
be
manufactured
using
mRNA
technology.
Since
then,
other
manufacturers
have
built
their
own
utilize
adenovirus
vector,
whole
inactivated
coronavirus,
protein
subunit
methods.
Given
continued
mutation
SARS-CoV-2
virus,
a
booster
vaccine
offers
additional
protection
for
citizens,
especially
those
with
comorbid
conditions.
However,
uptake
faced
hurdles.
This
literature
review
aims
analyze
acceptance
among
different
populations
throughout
world.
Keywords
searched
include
“COVID-19
rates
OR
rates,”
hesitancy,”
“reasons
against
vaccine,”
acceptance”
(for
each
country).
Research
articles
indexed
in
PubMed,
University
Illinois
Urbana-Champaign
Library,
Google
Scholar
included.
Despite
proven
effectiveness
booster,
hesitancy
is
still
causing
suboptimal
compliance
primary
thus
slowing
down
control
pandemic.
Reasons
differ
by
country
affected
misinformation,
political
circumstances,
cultural
values.
Among
most
common
reasons
found
are
distrust
government,
lack
safety
information,
fear
side
effects.
Uptake
also
been
delayed
low
middle
income
countries
due
resource
allocation
as
result,
these
fallen
behind
vaccination
benchmarks.
future
unknown,
but
mandates
doses
possibility.
Determining
ethical
impact
that
policies
could
will
allow
best
implementation.
International Journal of Molecular Sciences,
Journal Year:
2025,
Volume and Issue:
26(3), P. 1263 - 1263
Published: Jan. 31, 2025
The
emergence
of
SARS-CoV-2
variants
has
significantly
impacted
the
global
response
to
COVID-19
pandemic.
This
review
examines
genetic
diversity
variants,
their
roles
in
epidemiological
tracking,
and
influence
on
viral
fitness.
Variants
concern
(VOCs)
such
as
Alpha,
Beta,
Gamma,
Delta,
Omicron
have
demonstrated
increased
transmissibility,
altered
pathogenicity,
potential
resistance
neutralizing
antibodies.
Epidemiological
tracking
these
is
crucial
for
understanding
spread,
informing
public
health
interventions,
guiding
vaccine
development.
also
explores
how
specific
mutations
spike
protein
other
genomic
regions
contribute
fitness,
affecting
replication
efficiency,
immune
escape,
transmission
dynamics.
By
integrating
surveillance
data
with
clinical
findings,
this
provides
a
comprehensive
overview
ongoing
evolution
its
implications
strategies
new
Vaccines,
Journal Year:
2022,
Volume and Issue:
10(7), P. 1099 - 1099
Published: July 8, 2022
As
the
literature
highlights,
many
health
behavior
theories
try
to
explain
both
social
and
psychological
variables
influencing
an
individual's
behavior.
This
study
integrates
insights
relative
antecedents
of
getting
vaccinated
from
theories,
particularly
including
belief
model
(HBM),
theory
planned
(TPB),
different
socio-demographic
factors.
Furthermore,
we
considered
possible
mechanism
impact
distrust
in
science
on
individuals'
hesitance
resistance
taking
up
SARS-CoV-2
vaccination
subjects
living
Italy.
A
correlational
1095
enrolled
when
national
campaign
for
third
dose
was
launched.
questionnaire
used
measure:
Italian
Risk
Perception;
subjective
norm;
trust
science,
vaccine;
fear
COVID-19;
perceived
knowledge
about
SARS-CoV-2;
booster
intention.
Principal
results
show
that:
(i)
positive
relationship
provided
by
HBM
between
perceptions
risk
(vulnerability
severity)
intention
have
vaccine,
through
(ii)
norms
intention;
(iii)
that
plays
a
crucial
role
predicting
Finally,
indications
COVID-19,
full
mediation
relationships
determinants
TPA
HBM,
In
conclusion,
(not)
get
requires
consideration
plethora
socio-psychological
However,
overall,
appears
be
key
determinant
Additional
strategies
promoting
healthy
are
needed.
Vaccines,
Journal Year:
2022,
Volume and Issue:
10(7), P. 1048 - 1048
Published: June 30, 2022
The
emergence
of
SARS-CoV-2
mutants,
waning
immunity,
and
breakthrough
infections
prompted
the
use
booster
doses
COVID-19
vaccine
to
fight
against
pandemic.
India
started
in
January
2022
it
is
critical
determine
intention
dose
uptake
its
correlates.
Therefore,
current
cross-sectional
study
aimed
investigate
acceptability
associated
predictors
among
Indian
population.
A
convenience
sampling
technique
was
utilized
recruit
a
sample
687
residents.
55-item
psychometric
validated
survey
tool
used
assess
acceptability,
literacy
confidence.
Univariate,
bivariate,
multivariate
statistical
methods
were
analyze
data.
Over
50%
participants
reported
their
willingness
take
dose.
Among
group
not
willing
(n
=
303,
44.1%),
significantly
larger
proportion
respondents
unvaccinated
with
primary
series
(12.2%
vs.
5.2%,
p
<
0.001),
had
an
annual
income
below
2.96
lacs/annum
(52.8%
33.1,
residents
rural
areas
(38.0%
23.2%,
living
vulnerable
individuals
(78.5%
65.2%,
0.001)
did
have
family/friends
who
tested
positive
for
(54.6%
35.1%,
0.001).
Demographic,
variables
multi-theory
model
subscales
predict
initiation
hesitant
statistically
significant,
R2
0.561,
F
(26,
244)
11.978,
0.001;
adjusted
0.514.
Findings
this
highlight
need
develop
evidence-based
interventions
promote
uptake,
particularly
hard-to-reach
communities
developing
countries.
Vaccines,
Journal Year:
2022,
Volume and Issue:
10(7), P. 1097 - 1097
Published: July 8, 2022
The
emergence
of
breakthrough
infections
and
new
highly
contagious
variants
SARS-CoV-2
threaten
the
immunization
in
individuals
who
had
completed
primary
COVID-19
vaccination.
This
systematic
review
meta-analysis
investigated,
for
first
time,
acceptance
booster
dose
its
associated
factors
among
fully
vaccinated
individuals.
We
followed
PRISMA
guidelines.
searched
Scopus,
Web
Science,
Medline,
PubMed,
ProQuest,
CINAHL
medrxiv
from
inception
to
21
May
2022.
found
14
studies
including
104,047
prevalence
intend
accept
a
was
79.0%,
while
unsure
12.6%,
that
refuse
14.3%.
main
predictors
willingness
were
older
age,
flu
vaccination
previous
season,
confidence
most
important
reasons
decline
adverse
reactions
discomfort
experienced
after
vaccine
doses
concerns
serious
doses.
Considering
burden
COVID-19,
high
rate
could
be
critical
controlling
pandemic.
Our
findings
are
innovative
help
policymakers
design
implement
specific
programs
order
decrease
hesitancy.
Deleted Journal,
Journal Year:
2024,
Volume and Issue:
21(1)
Published: June 28, 2024
Abstract
SARS-CoV-2,
the
cause
of
COVID-19
pandemic,
has
introduced
a
challenging
era
characterized
by
persistent
emergence
subvariants.
Even
after
World
Health
Organization
announced
end
virus
continues
to
evolve,
posing
significant
challenges
public
health
responses.
This
comprehensive
review
examines
multifaceted
impacts
these
subvariants,
emphasizing
their
significance
across
diverse
dimensions.
SARS-CoV-2
genetic
variability,
especially
at
spike
protein
region,
which
given
rise
Variants
Concern,
including
Beta,
Delta,
Gamma,
Alpha,
and
highly
mutable
Omicron,
differently
exhibit
varying
levels
immune
evasion,
disease
severity,
transmissibility.
Subvariants
within
Omicron
lineage,
BA.1,
BA.2,
BA.3,
others,
further
complicate
landscape
with
distinct
signatures
infectivity
levels.
The
extend
diagnostic
techniques,
treatment
strategies,
vaccine
effectiveness,
underscoring
need
for
response
preventive
measures,
genomic
surveillance,
vaccination
campaigns.
Sustaining
interventions
is
critical,
necessitating
long-term
strategies
considering
socio-political
factors,
community
involvement,
continuous
adaptation
healthcare
approaches,
robust
monitoring,
sustainable
effectively
combat
virus's
ever-changing
landscape.
Frontiers in Immunology,
Journal Year:
2025,
Volume and Issue:
15
Published: Jan. 6, 2025
The
high
percentage
of
Omicron
breakthrough
infection
in
vaccinees
is
an
emerging
problem,
which
we
have
a
limited
understanding
the
phenomenon.
We
performed
single-cell
transcriptome
coupled
with
T-cell/B-cell
receptor
(TCR/BCR)
sequencing
15
peripheral
blood
mononuclear
cell
(PBMC)
samples
from
and
naïve
booster
vaccination.
found
that
after
infection,
multiple
clusters
showed
activation
type
I
IFN
pathway
widespread
expression
Interferon-stimulated
genes
(ISGs);
T
B
lymphocytes
exhibited
antiviral
proinflammatory-related
differentiation
features
pseudo-time
trajectories;
large
TCR
clonal
expansions
were
concentrated
effector
CD8
cells,
BCRs
preference
for
IGHV3.
In
addition,
myeloid
cells
BA.5.2
fourth
dose
aerosolized
Ad5-nCoV
characterized
by
enhanced
proliferation,
chemotactic
migration,
antigen
presentation.
Collectively,
our
study
informs
comprehensive
understandings
immune
characterization
revealing
positive
potential
induced
doses
vaccine
possible
"trained
immunity"
phenomenon
Ad5-nCoV,
providing
basis
selection
vaccination
strategies.
Antibiotics,
Journal Year:
2022,
Volume and Issue:
11(6), P. 734 - 734
Published: May 30, 2022
At
present,
antibiotic
resistance
represents
a
global
problem
in
modern
medicine.
In
the
near
future,
humanity
may
face
situation
where
medicine
will
be
powerless
against
resistant
bacteria
and
post-antibiotic
era
come.
The
development
of
new
antibiotics
is
either
very
expensive
or
ineffective
due
to
rapidly
developing
bacterial
resistance.
need
develop
alternative
approaches
treatment
infections,
such
as
phage
therapy,
beyond
doubt.
cornerstone
defense
are
multidrug
(MDR)
pumps,
which
involved
resistance,
toxin
export,
biofilm,
persister
cell
formation.
MDR
pumps
primary
non-specific
antibiotics,
while
drug
target
modification,
inactivation,
switching,
sequestration
second,
specific
line
their
defense.
All
have
bacteriophages
evolved
along
with
them
use
bacteria’s
for
bind
penetrate
into
cells.
study
understanding
mechanisms
contribution
overall
sensitivity
allow
us
seriously
delay
onset
even
prevent
it
altogether
phage-antibiotic
synergy.
Vaccines,
Journal Year:
2022,
Volume and Issue:
10(10), P. 1637 - 1637
Published: Sept. 29, 2022
The
vaccine-induced
immunity
of
healthcare
workers
(HCWs)
is
crucial
to
controlling
the
COVID-19
pandemic.
Therefore,
we
conducted
a
systematic
review
and
meta-analysis
assess
vaccine
uptake
among
HCWs
worldwide
identify
predictors
vaccination.
We
searched
Scopus,
Web
Science,
Medline,
PubMed,
ProQuest,
CINAHL,
medRxiv
up
25
August
2022.
applied
Preferred
Reporting
Items
for
Systematic
Reviews
Meta-Analysis
guidelines.
found
studies
including
491,624
vaccinated
HCWs,
while
full
sample
included
555,561
HCWs.
overall
proportion
was
77.3%.
Vaccine
that
were
in
North
America
(85.6%)
higher
than
Asia
(79.5%),
Europe
(72.8%),
Africa
(65.6%).
prevalence
83.6%
77.4%
physicians
nurses,
respectively.
Older
age,
white
race,
physicians’
profession,
seasonal
influenza
vaccine,
direct
patient
care,
confidence
safety
effectiveness
positive
uptake,
history
SARS-CoV-2
infection
negative
predictor.
Deep
understanding
factors
influence
HCWs’
decisions
receive
critical
implementing
tailored
communication
strategies
who
are
at
risk
not
getting
vaccinated.