Journal of Pure and Applied Microbiology,
Journal Year:
2024,
Volume and Issue:
18(3), P. 1424 - 1437
Published: Aug. 29, 2024
Severe
Acute
Respiratory
Syndrome
(SARS-CoV-2)
causes
the
coronavirus
disease
(COVID-19),
which
is
characterised
by
severe
respiratory
syndrome
and
other
complications.
It
a
serious
threat
to
global
public
health
if
proper
vaccination
not
followed.
The
efficient
COVID-19
management
requires
along
with
precautionary
measures.
Public
transmission
of
seems
have
decreased
immune
response
viral
infections
has
improved
vaccination.
present
review
discusses
in
detail
about
current
situation
COVID-19,
based
on
latest
reports
approved
vaccine
types
their
efficacy,
status,
various
SARS-CoV-2
variants.
This
also
includes
insights
into
post-COVID
complications
recovered
patients.
Besides,
some
ill-effects
drugs
inducing
diseases
patients,
are
discussed
this
article.
study
will
help
researchers
prepare
strategies
for
further
research
production
prevent
occurrence
future.
Vaccines,
Journal Year:
2024,
Volume and Issue:
12(6), P. 579 - 579
Published: May 25, 2024
The
emergence
of
the
severe
acute
respiratory
syndrome
coronavirus
2
(SARS-CoV-2),
resulting
in
COVID-19
pandemic,
has
profoundly
impacted
global
healthcare
systems
and
trajectory
economic
advancement.
As
nations
grapple
with
far-reaching
consequences
this
unprecedented
health
crisis,
administration
vaccines
proven
to
be
a
pivotal
strategy
managing
crisis.
Protein-based
have
garnered
significant
attention
owing
their
commendable
safety
profile
precise
immune
targeting
advantages.
Nonetheless,
unpredictable
mutations
widespread
transmission
SARS-CoV-2
posed
challenges
for
vaccine
developers
governments
worldwide.
Monovalent
multivalent
represent
two
strategies
development,
ongoing
controversy
surrounding
efficacy.
This
review
concentrates
on
development
protein-based
vaccines,
specifically
addressing
transition
from
monovalent
formulations,
synthesizes
data
manufacturers,
antigen
composition,
clinical
study
findings,
other
features
that
shape
distinct
profiles
overall
effectiveness.
Our
hypothesis
is
could
offer
enhanced
capability
broad-spectrum
protection.
Vaccines,
Journal Year:
2025,
Volume and Issue:
13(1), P. 43 - 43
Published: Jan. 7, 2025
Background:
SCTV01E
is
a
tetravalent
recombinant
COVID-19
vaccine
authorized
for
emergency
use
in
China
adults
18
years
and
older
but
not
those
under
18.
Objective:
This
Phase
2
trial
assessed
the
safety
immunogenicity
of
healthy
children
adolescents
aged
3
to
17
years,
establish
immunobridging
with
that
observed
from
efficacy
pivotal
(NCT05308576).
Methods:
Participants
were
randomly
assigned
receive
either
30
µg
or
placebo.
Primary
endpoints
focused
on
geometric
mean
titer
(GMT)
seroresponse
rate
(SRR)
neutralizing
antibodies
(nAb)
against
Omicron
BA.5.
Results:
In
total,
268
participants
(214
vs.
54
placebo)
included
analysis,
241
(191
50)
analysis.
Overall,
127
(59.3%)
receiving
9
(16.7%)
placebo
reported
adverse
events
(AEs),
most
which
Grade
1
2.
No
serious
(SAEs)
special
interest
(AESIs)
reported.
bridging
data
95
youths
compared
188
adults;
ratio
(GMR)
titers
was
8.78
(95%
CI:
6.05-12.74,
p
<
0.001),
lower
bound
95%
CI
exceeding
0.67.
The
difference
SRR
6.34%
0.93-11.22%)
(p
=
0.029),
95%CI
>-5%,
indicating
superiority.
Conclusions:
found
be
safe
well
tolerated
adolescents,
generating
robust
immune
response
supports
its
potential
younger
populations.
npj Vaccines,
Journal Year:
2025,
Volume and Issue:
10(1)
Published: March 17, 2025
The
intranasal
SARS-CoV-2
vaccine
dNS1-RBD
(Pneucolin®),
based
on
a
live-attenuated
influenza
virus
vector,
has
obtained
Emergency
Use
Authorization
in
China
for
individuals
aged
18
years
and
older.
Here,
we
conducted
single-center,
double-blind,
placebo-controlled,
age
de-escalation
phase
1
clinical
trial
to
evaluate
the
safety
of
children
3–17
(ChiCTR2300068044).
Sixty-three
participants
received
2
doses
or
placebo
at
days
0
14.
Safety
assessments
included
adverse
events/reactions
within
30
serious
events
(SAEs)
over
12
months.
Blood
nasal
secretion
samples
were
collected
further
monitor
blood
indices
viral
shedding.
group
showed
similar
reaction
rates
(39.0%
vs
36.4%),
with
no
SAEs
related
vaccination.
Data
suggested
that
is
well-tolerated
years,
warrants
studies
its
safety,
immunogenicity
efficacy
this
population.
Expert Review of Vaccines,
Journal Year:
2023,
Volume and Issue:
22(1), P. 620 - 628
Published: June 30, 2023
Introduction
Approximately
half
of
the
13.4
billion
COVID-19
vaccine
doses
administered
globally
were
inactivated
or
viral
vector
platforms.
The
harmonization
and
optimization
regimens
has
become
a
key
focus
policy
makers
healthcare
providers
presents
an
opportunity
to
reassess
continued
use
pandemic-era
vaccines.Areas
covered
Immunological
evidence
from
studies
various
homologous
heterologous
been
rapidly
published,
however
interpretation
these
data
are
complicated
by
many
types
highly
variable
participant
exposure
vaccination
histories.
Recent
demonstrate
that
after
primary
series
(i.e.
BBV152,
BBIBP-CorV),
(ChAdOx1
nCov-2019)
vaccines,
boost
with
protein-based
NVX-CoV2373
elicits
more
potent
ancestral
strain
omicron-specific
antibody
responses
compared
boosts.Expert
opinion
While
mRNA
vaccines
likely
yield
similar
performance
booster
doses,
later
offers
notable
advantages
countries
high
uptake
in
terms
transportation
storage
logistics
can
potentially
appeal
hesitant
individuals.
Moving
forward,
vaccine-mediated
protection
recipients
may
be
optimized
such
as
NVX-CoV2373.
Journal of Medical Virology,
Journal Year:
2024,
Volume and Issue:
96(2)
Published: Feb. 1, 2024
Abstract
The
continuous
evolution
of
severe
acute
respiratory
syndrome
coronavirus
2
(SARS‐CoV‐2)
has
been
accompanied
by
the
emergence
viral
mutations
that
pose
a
great
challenge
to
existing
vaccine
strategies.
It
is
not
fully
understood
with
regard
role
on
SARS‐CoV‐2
spike
protein
from
emerging
variants
in
T
cell
immunity.
In
current
study,
recombinant
eukaryotic
plasmids
were
constructed
as
DNA
vaccines
express
multiple
strains.
These
used
immunize
BALB/c
mice,
and
cross‐T
responses
these
strains
quantitated
using
interferon‐γ
(IFN‐γ)
Elispot.
Peptides
covering
full‐length
different
detect
epitope‐specific
IFN‐γ
+
CD4
CD8
fluorescence‐activated
sorting.
Delta
Omicron
BA.1
found
have
broad
cross‐reactivity,
followed
Beta
strain.
landscapes
epitopes
demonstrated
at
least
30
Alpha
BA.5
can
mediate
escape
its
sublineages
19
out
mutations,
most
which
are
new,
few
inherited
ancient
circulating
concerns.
immunity
between
prototype
strain
be
attributed
located
N‐terminal
domain
(181–246
aa
[amino
acids],
271–318
aa)
C‐terminal
(1171–1273
protein.
findings
provide
vivo
evidence
for
optimizing
manufacturing
immunization
strategies
or
future
variants.
BMC Infectious Diseases,
Journal Year:
2024,
Volume and Issue:
24(1)
Published: April 19, 2024
Considering
that
neutralizing
antibody
levels
induced
by
two
doses
of
the
inactivated
vaccine
decreased
over
time
and
had
fallen
to
low
6
months,
homologous
heterologous
booster
immunization
programs
have
been
implemented
in
adults
China.
The
recombinant
COVID-19
(ZF2001)
after
priming
with
healthy
children
adolescents
has
not
reported.
We
performed
an
open-labeled,
single-arm
clinical
trial
evaluate
safety
immunogenicity
ZF2001
among
240
population
aged
3-17
years
primary
outcome
was
immunogenicity,
including
geometric
mean
titers
(GMTs),
ratios
(GMRs)
seroconversion
rates
SARS-CoV-2
antibodies
against
prototype
Omicron
BA.2
variant
at
14
days
vaccination
booster.
On
day
post-booster,
a
third
dose
provided
substantial
increase
responses
minors,
overall
occurrence
rate
adverse
reactions
all
were
mild
or
moderate.
results
showed
high
good
profile
adolescents,
can
elicit
certain
level
Omicron.Trial
registration
NCT05895110
(Retrospectively
registered,
First
posted
ClinicalTrials.gov
date:
08/06/2023).