The Journal of Infectious Diseases,
Год журнала:
2024,
Номер
unknown
Опубликована: Май 14, 2024
Quantifying
the
risk
of
severe
acute
respiratory
syndrome
coronavirus
2
(SARS-CoV-2)
transmission
in
indoor
settings
is
crucial
for
developing
effective
non-vaccine
prevention
strategies
and
policies.
However,
summary
evidence
on
risks
other
than
households,
schools,
elderly
care,
health
care
facilities
limited.
We
conducted
a
systematic
review
to
estimate
secondary
attack
rates
(SARs)
SARS-CoV-2
factors
modifying
community
settings.
Nature Medicine,
Год журнала:
2023,
Номер
29(2), С. 348 - 357
Опубликована: Янв. 18, 2023
The
SARS-CoV-2
Omicron
variant
has
demonstrated
enhanced
transmissibility
and
escape
of
vaccine-derived
immunity.
Although
first-generation
vaccines
remain
effective
against
severe
disease
death,
robust
evidence
on
vaccine
effectiveness
(VE)
all
infections,
irrespective
symptoms,
remains
sparse.
We
used
a
community-wide
serosurvey
with
5,310
subjects
to
estimate
how
vaccination
histories
modulated
risk
infection
in
infection-naive
Hong
Kong
during
large
wave
BA.2
epidemic
January-July
2022.
estimated
that
infected
45%
(41-48%)
the
local
population.
Three
four
doses
BNT162b2
or
CoronaVac
were
7
days
after
(VE
48%
(95%
credible
interval
34-64%)
69%
(46-98%)
for
three
BNT162b2,
respectively;
VE
30%
(1-66%)
56%
(6-97%)
CoronaVac,
respectively).
At
100
immunization,
waned
26%
(7-41%)
35%
(10-71%)
6%
(0-29%)
11%
(0-54%)
CoronaVac.
rapid
waning
conferred
by
an
increasingly
complex
viral
evolutionary
landscape
highlight
necessity
rapidly
deploying
updated
followed
vigilant
monitoring
VE.
Frontiers in Public Health,
Год журнала:
2022,
Номер
10
Опубликована: Дек. 9, 2022
While
increasing
the
ventilation
rate
is
an
important
measure
to
remove
inhalable
virus-laden
respiratory
particles
and
lower
risk
of
infection,
direct
validation
in
schools
with
population-based
studies
far
from
definitive.
Nature Communications,
Год журнала:
2022,
Номер
13(1)
Опубликована: Июнь 24, 2022
Abstract
Monitoring
population
protective
immunity
against
SARS-CoV-2
variants
is
critical
for
risk
assessment.
We
hypothesize
that
Hong
Kong’s
explosive
Omicron
BA.2
outbreak
in
early
2022
could
be
explained
by
low
herd
immunity.
Our
seroprevalence
study
using
sera
collected
from
January
to
December
2021
shows
a
very
prevalence
of
neutralizing
antibodies
(NAb)
ancestral
virus
among
older
adults.
The
age
group-specific
NAb
generally
correlates
with
the
vaccination
uptake
rate,
but
adults
have
much
lower
seropositive
rate
than
rate.
For
all
groups,
variant
virus.
suggests
this
and
exceptionally
high
case-fatality
≥80
year-old
group
(9.2%)
attributed
lack
population,
especially
vulnerable
adults,
ongoing
sero-surveillance
essential.
Viruses,
Год журнала:
2022,
Номер
14(11), С. 2519 - 2519
Опубликована: Ноя. 14, 2022
Hong
Kong
SAR
has
adopted
universal
masking,
social
distancing,
testing
of
all
symptomatic
and
high-risk
groups
for
isolation
confirmed
cases
in
healthcare
facilities,
quarantine
contacts
as
epidemiological
control
measures
without
city
lockdown
or
border
closure.
These
successfully
suppressed
the
community
transmission
pre-Omicron
SARS-CoV-2
variants
lineages
during
first
to
fourth
wave.
No
nosocomial
infection
was
documented
among
workers
300
days.
The
strategy
COVID-19
containment
provide
additional
time
achieve
population
immunity
by
vaccination.
near-zero
situation
about
8
months
2021
did
not
enable
adequate
immunization
eligible
population.
A
combination
factors
identified,
especially
complacency
associated
with
low
local
activity,
together
vaccine
hesitancy.
importation
highly
transmissible
Omicron
variant
kickstarted
fifth
wave
COVID-19,
which
could
no
longer
be
controlled
our
initial
measures.
explosive
wave,
partially
contributed
vertical
airborne
high-rise
residential
buildings,
resulted
over
one
million
infection.
In
this
review,
we
summarize
epidemiology
public
health
against
dissemination
until
day
1000.
Environmental Science & Technology,
Год журнала:
2024,
Номер
58(16), С. 6868 - 6877
Опубликована: Апрель 9, 2024
Bioaerosols
play
a
significant
role
in
the
transmission
of
many
infectious
diseases,
especially
enclosed
indoor
environments.
Ultraviolet
(UV)
disinfection
has
demonstrated
high
efficacy
inactivating
microorganisms
suspended
air.
To
develop
more
effective
and
efficient
UV
protocols,
it
is
necessary
to
evaluate
optimize
effectiveness
against
aerosolized
bacteria
viruses
across
entire
spectrum.
In
this
study,
we
evaluated
performance
spectrum,
ranging
from
222
365
nm,
viruses,
including
