Human Reproduction,
Journal Year:
2023,
Volume and Issue:
38(12), P. 2536 - 2537
Published: Oct. 12, 2023
Increased
risk
of
fetal
loss
after
COVID-19
vaccinationSir,We
read
with
interest
the
article
by
Thorp
et
al.
(2022)
published
as
a
pre-print
and
in
Journal
American
Physicians
Surgeons
their
letter
to
editor
suggesting
need
include
data
our
meta-analysis
evaluating
miscarriage
following
use
SARS-CoV-2
vaccines
(Rimmer
al.,
2023).The
authors
present
findings
simulation
model
that
was
constructed
using
from
Vaccine
Adverse
Events
Reporting
System
(VAERS)
database
USA
between
1
January
1998
30
June
2022.The
chose
construct
estimating
total
population
who
received
either
vaccine,
number
flu
doses
given,
incidence
adverse
events
globally.Interestingly,
decided
report
compared
instead
simply
reporting
on
true
reported
VAERS
database.Clearly,
any
is
subject
high
degree
bias
when
choosing
assumptions
underpinning
its
construct.Thorp
seem
examine
hypothesis
are
inherently
more
harmful
than
because
they
were
rolled
out
rapidly.However,
it
not
clear
how
useful
such
or
assumption
would
inform
clinical
practice.Our
live
birth
vaccines.Therefore,
does
meet
inclusion
criteria
for
meta-analysis.Should
provide
robust
factual
vaccines,
we
be
happy
update
accordingly.
Human Reproduction,
Journal Year:
2023,
Volume and Issue:
38(12), P. 2281 - 2288
Published: Oct. 13, 2023
Abstract
Artificial
intelligence
(AI)-driven
language
models
have
the
potential
to
serve
as
an
educational
tool,
facilitate
clinical
decision-making,
and
support
research
academic
writing.
The
benefits
of
their
use
are
yet
be
evaluated
concerns
been
raised
regarding
accuracy,
transparency,
ethical
implications
using
this
AI
technology
in
publishing.
At
moment,
Chat
Generative
Pre-trained
Transformer
(ChatGPT)
is
one
most
powerful
widely
debated
models.
Here,
we
discuss
its
feasibility
answer
scientific
questions,
identify
relevant
literature,
assist
writing
field
human
reproduction.
With
consideration
scarcity
data
on
topic,
assessed
ChatGPT
writing,
from
six
meta-analyses
published
a
leading
journal
text
generated
by
was
compared
original
blinded
reviewers.
While
can
produce
high-quality
summarize
information
efficiently,
current
ability
interpret
questions
limited,
it
cannot
relied
upon
for
literature
search
or
accurate
source
citation
due
spread
incomplete
false
information.
We
advocate
open
discussions
within
reproductive
medicine
community
explore
advantages
disadvantages
implementing
technology.
Researchers
reviewers
should
informed
about
models,
encourage
authors
transparently
disclose
use.
BMJ Global Health,
Journal Year:
2024,
Volume and Issue:
9(4), P. e014247 - e014247
Published: April 1, 2024
Objective
To
assess
the
effects
of
COVID-19
vaccines
in
women
before
or
during
pregnancy
on
SARS-CoV-2
infection-related,
pregnancy,
offspring
and
reactogenicity
outcomes.
Design
Systematic
review
meta-analysis.
Data
sources
Major
databases
between
December
2019
January
2023.
Study
selection
Nine
pairs
reviewers
contributed
to
study
selection.
We
included
test-negative
designs,
comparative
cohorts
randomised
trials
infection-related
Non-comparative
cohort
studies
reporting
outcomes
were
also
included.
Quality
assessment,
data
extraction
analysis
Two
independently
assessed
quality
extracted
data.
undertook
random-effects
meta-analysis
reported
findings
as
HRs,
risk
ratios
(RRs),
ORs
rates
with
95%
CIs.
Results
Sixty-seven
(1
813
947
women)
Overall,
design
studies,
pregnant
fully
vaccinated
any
vaccine
had
61%
reduced
odds
infection
(OR
0.39,
CI
0.21
0.75;
4
23
927
women;
I
2
=87.2%)
94%
hospital
admission
0.06,
0.01
0.71;
868
=92%).
In
adjusted
hypertensive
disorders
was
by
12%
(RR
0.88,
0.82
0.92;
studies;
115
085
women),
while
caesarean
section
9%
0.91,
0.85
0.98;
6
30
192
women).
observed
an
8%
reduction
neonatal
intensive
care
unit
0.92,
0.87
0.97;
54
569
babies
born
versus
not
women.
general,
vaccination
associated
increased
adverse
perinatal
Pain
at
injection
site
most
common
side
effect
(77%,
52%
94%;
11
27
195
Conclusion
are
effective
preventing
related
complications
PROSPERO
registration
number
CRD42020178076.
Drug Safety,
Journal Year:
2024,
Volume and Issue:
47(10), P. 991 - 1010
Published: July 15, 2024
Pregnant
persons
are
susceptible
to
significant
complications
following
COVID-19,
even
death.
However,
worldwide
COVID-19
vaccination
coverage
during
pregnancy
remains
suboptimal.
Vaccines,
Journal Year:
2024,
Volume and Issue:
12(4), P. 440 - 440
Published: April 18, 2024
COVID-19
vaccination
rates
are
lower
in
women
of
reproductive
age
(WRA),
including
pregnant/postpartum
women,
despite
their
poorer
COVID-19-related
outcomes.
We
evaluated
the
experiences
3568
U.K.
WRA,
1983
(55.6%)
experiencing
a
pandemic
pregnancy,
recruited
through
ZOE
COVID
Symptom
Study
app.
Two
staggered
online
questionnaires
(Oct–Dec
2021:
3453
responders;
Aug–Sept
2022:
2129
responders)
assessed
status,
vaccination,
and
attitudes
for/against
vaccination.
Descriptive
analyses
included
type(s),
timing
relative
to
age-based
eligibility
delay
(first
>28
days
from
eligibility),
rationale,
with
content
analysis
free-text
comments.
Most
responders
(3392/3453,
98.2%)
were
vaccinated
by
Dec
2021,
motivated
altruism,
supportiveness
general,
low
risk,
concerns.
Few
declined
(by
Sept/2022:
20/2129,
1.0%),
citing
risks
(pregnancy-specific
longer-term),
pre-existing
immunity,
personal/philosophical
reasons.
delayed
although
(vs.
other
WRA)
received
later
(median
3
vs.
0
after
eligibility,
p
<
0.0001).
Despite
high
uptake,
concerns
adverse
effects,
misinformation
(including
healthcare
providers),
ever-changing
government
advice,
complex
decision
making.
In
summary,
most
this
large
WRA
cohort
promptly
vaccinated,
pregnant/post-partum
women.
Altruism
community
benefit
superseded
personal
as
reasons
for
Nevertheless,
experienced
angst
vaccine-related
discouragement.
These
findings
should
inform
strategies
WRA.
Human Reproduction Open,
Journal Year:
2024,
Volume and Issue:
2024(3)
Published: Jan. 1, 2024
Abstract
STUDY
QUESTION
What
are
the
factors
influencing
decline
in
birth
rates
observed
higher-income
countries
later
phase
of
COVID-19
pandemic?
SUMMARY
ANSWER
Our
results
suggest
that
economic
uncertainty,
non-pharmaceutical
policy
interventions,
and
first
wave
population-wide
vaccination
campaign
were
associated
with
during
2022.
WHAT
IS
KNOWN
ALREADY
During
pandemic,
most
briefly
declined
then
shortly
recovered,
showing
no
common
trends
afterwards
until
early
2022,
when
they
unexpectedly
dropped.
DESIGN,
SIZE,
DURATION
This
study
uses
data
on
monthly
total
fertility
(TFRs)
adjusted
for
seasonality
calendar
effects
provided
Human
Fertility
Database
(HFD).
Births
taking
place
between
November
2020
October
2022
correspond
to
conceptions
occurring
February
January
i.e.
after
onset
pandemic
but
prior
Russian
invasion
Ukraine.
The
cover
26
countries,
including
21
Europe,
USA,
Canada,
Israel,
Japan,
Republic
Korea.
PARTICIPANTS/MATERIALS,
SETTING,
METHODS
First,
we
a
descriptive
analysis
changes
TFR.
Second,
employed
linear
fixed
regression
models
estimate
association
explanatory
seasonally
TFRs.
considered
three
broader
sets
factors:
interventions
restricting
mobility
social
activities
outside
home,
progression
programmes.
MAIN
RESULTS
AND
THE
ROLE
OF
CHANCE
We
found
as
measured
by
increased
inflation
(P
<
0.001),
whereas
unemployment
did
not
show
any
link
births
=
0.677).
stringency
was
linked
postponement
births,
only
lower
institutional
trust
0.003).
In
higher
trust,
stricter
containment
measures
positively
rates,
both
year
0.019)
and,
albeit
weakly
significant,
0.057).
Furthermore,
negative
share
population
having
received
dose
TFRs
completed
primary
course
(usually
consisting
two
doses)
recovery
0.001).
LARGE
SCALE
DATA
N/A.
LIMITATIONS,
REASONS
FOR
CAUTION
research
is
restricted
relatively
strong
support
policies
government
well
wide
access
modern
contraception.
allow
analyses
key
characteristics,
such
age,
order,
status.
WIDER
IMPLICATIONS
FINDINGS
multi-country
drivers
pandemic.
past,
periods
following
epidemics
health
crises
typically
births.
contrast,
our
gradual
phasing
out
measures,
allowing
return
more
normal
work
life,
contributed
declining
some
countries.
addition,
indicates
women
avoided
pregnancy
completion
protocol.
FUNDING/COMPETING
INTEREST(S)
use
external
funding.
authors
acknowledge
funding
from
their
home
institution,
Vienna
Institute
Demography
Austrian
Academy
Sciences,
Open-Access
Fund
Sciences.
For
purpose
open
access,
have
applied
CC
BY
public
copyright
licence
Author
Accepted
Manuscript
versions
arising
this
submission.
All
declare
conflicts
interest.
medRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2024,
Volume and Issue:
unknown
Published: April 28, 2024
Abstract
BACKGROUND
During
the
COVID-19
pandemic,
birth
rates
in
most
higher-income
countries
first
briefly
declined
and
then
shortly
recovered,
showing
no
common
trends
afterwards
until
early
2022,
when
they
unexpectedly
dropped.
STUDY
FOCUS
We
analyse
monthly
changes
total
fertility
during
with
a
special
focus
on
countries.
consider
three
broader
sets
of
explanatory
factors:
economic
uncertainty,
policy
interventions
restricting
mobility
social
activities
outside
home,
role
vaccination
programmes.
DESIGN,
DATA
This
study
uses
population-wide
data
adjusted
for
seasonality
calendar
effects
provided
Human
Fertility
Database
(HFD,
2023).
Births
taking
place
between
November
2020
October
2022
correspond
to
conceptions
occurring
February
January
i.e.,
after
onset
pandemic
but
prior
Russian
invasion
Ukraine.
The
cover
26
countries,
including
21
Europe,
United
States,
Canada,
Israel,
Japan
Republic
Korea.
METHODS
First,
we
provide
descriptive
analysis
rate
(TFR).
Second,
estimate
factors
observed
swings
using
linear
fixed
(within)
regression
models.
MAIN
RESULTS
find
that
were
associated
as
measured
by
increased
inflation,
stringency
interventions,
progression
campaign,
whereas
unemployment
did
not
show
any
link
pandemic.
LIMITATIONS,
REASONS
FOR
CAUTION
Our
research
is
restricted
relatively
strong
support
policies
government
well
wide
access
modern
contraception.
do
allow
analysing
key
characteristics,
such
age,
order
status.
WIDER
IMPLICATIONS
OF
THE
FINDINGS
multi-country
drivers
later
phase
In
past,
periods
following
epidemics
health
crises
typically
recovery
fertility.
contrast,
our
results
gradual
phasing
out
containment
measures,
allowing
return
more
normal
work
life,
contributed
declining
addition,
indicates
some
women
avoided
pregnancy
initial
roll-out.
Population Studies,
Journal Year:
2025,
Volume and Issue:
unknown, P. 1 - 16
Published: March 11, 2025
We
follow
general
fertility
rates
(GFRs)
in
Switzerland
up
to
2022,
with
a
focus
on
their
dynamics
during
and
after
pandemics.
Historical
influenza
pandemics
(1889–90,
1918–20,
1957)
have
consistently
led
temporary
declines
births
between
six
nine
months
the
pandemic
peak.
High
of
miscarriage
may
explain
these
findings.
After
1889–90
1918–20
pandemics,
short-term
baby
booms
occurred.
For
recent
Covid-19
pandemic,
appear
more
complex.
The
GFR
had
already
been
declining
since
2018,
before
hit
Switzerland.
During
shortly
first
two
waves
2020,
there
was
an
increase
conceptions,
leading
higher
2021:
shutdown
measures
brought
planned
pregnancies
forwards.
Subsequently,
declined
from
February
2022;
one
possible
explanation
is
that
were
intentionally
postponed
until
vaccination.
Following
population-level
observations,
in-depth
studies
are
needed
understand
better
why
affected
by
Vaccine,
Journal Year:
2025,
Volume and Issue:
53, P. 127070 - 127070
Published: April 1, 2025
Pregnant
women
are
at
an
elevated
risk
for
severe
COVID-19,
but
nationwide
rates
of
vaccination
and
its
timing
during
pregnancy
not
well
documented
in
France.
To
assess
COVID-19
among
pregnant
France,
compare
them
to
those
the
general
population,
analyse
factors
associated
with
status
timing.
A
study
using
EPI-MERES
register,
which
includes
all
1,203,454
who
delivered
between
April
2021
December
2022
Standardization
by
age
social
index
was
used
female
population.
Associations
sociodemographic
factors,
monitoring
indicators,
pre-existing
comorbidities
were
measured
multivariable
logistic
regression.
Overall,
52
%
received
least
one
vaccine
dose,
62.1
vaccinated
before
conception
8.2
%,
20.9
8.8
1st,
2nd,
3rd
trimester,
respectively.
Vaccination
initially
lagged
behind
population
converged
June
2022,
a
six-month
lag.
Younger
more
socially
deprived
less
highly
vaccinated.
Unvaccinated
likely
be
their
third
(aOR,
1.21
[1.19-1.22]),
had
fewer
ultrasound
scans
0.71
[0;
70-0.73]),
often
took
folic
acid
0.73
[0.72-0.74]).
Women
comorbidities,
such
as
obesity,
diabetes,
hypertension,
antidepressant
use,
or
chronic
respiratory
disease,
unvaccinated
(aORs
ranged
from
0.69
0.89).
France
than
crucial
pandemic
periods
eventually
reached
similar
rates.
Socioeconomic
level
prenatal
care
strongly
low
uptake.
This
should
focus
future
interventions
policy
adjustments
across
segments
this