Monitoring of indoor air quality at a large sailing cruise ship to assess ventilation performance and disease transmission risk
The Science of The Total Environment,
Journal Year:
2025,
Volume and Issue:
962, P. 178286 - 178286
Published: Jan. 1, 2025
Large
passenger
ships
are
characterised
as
enclosed
and
crowded
indoor
spaces
with
frequent
interactions
between
travellers,
providing
conditions
that
facilitate
disease
transmission.
This
study
aims
to
provide
an
ship
CO
Language: Английский
Airborne transmission risks of tuberculosis and COVID-19 in schools in South Africa, Switzerland, and Tanzania: Modeling of environmental data
PLOS Global Public Health,
Journal Year:
2024,
Volume and Issue:
4(1), P. e0002800 - e0002800
Published: Jan. 18, 2024
The
COVID-19
pandemic
renewed
interest
in
airborne
transmission
of
respiratory
infections,
particularly
congregate
indoor
settings,
such
as
schools.
We
modeled
risks
tuberculosis
(caused
by
Mycobacterium
,
Mtb
)
and
SARS-CoV-2)
South
African,
Swiss
Tanzanian
secondary
estimated
the
infection
with
Wells-Riley
equation,
expressed
median
2.5%
97.5%
quantiles
(credible
interval
[CrI]),
based
on
ventilation
rate
duration
exposure
to
infectious
doses
(so-called
quanta).
computed
air
change
(ventilation)
using
carbon
dioxide
(CO
2
a
tracer
gas
quanta
generation
reported
estimates
from
literature.
share
students
classroom
is
determined
country-specific
pulmonary
TB.
For
SARS-CoV-2,
number
was
excess
mortality
mitigate
bias
reporting
testing.
Average
CO
concentration
(parts
per
million
[ppm])
1,610
ppm
Africa,
1,757
Switzerland,
648
Tanzania.
annual
risk
for
22.1%
(interquartile
range
[IQR]
2.7%-89.5%)
0.7%
(IQR
0.1%-6.4%)
0.5%
0.0%-3.9%)
monthly
6.8%
0.8%-43.8%)
1.2%
0.1%-8.8%)
0.9%
0.1%-6.6%)
differences
primarily
reflect
higher
incidence
SARS-CoV-2
prevalence
TB
but
also
rates
due
better
natural
classrooms
Global
comparisons
disease
can
provide
high-level
information
policy-making
regarding
appropriate
control
strategies.
Language: Английский
Reducing Transmission of Airborne Respiratory Pathogens: A New Beginning as the COVID-19 Emergency Ends
Environmental Health Perspectives,
Journal Year:
2024,
Volume and Issue:
132(5)
Published: May 1, 2024
In
response
to
the
COVID-19
pandemic,
new
evidence-based
strategies
have
emerged
for
reducing
transmission
of
respiratory
infections
through
management
indoor
air.
Language: Английский
Review on respiratory infectious disease transmission mechanism: effects of human movement and facemask use
Jialin Wu,
No information about this author
Feifan He,
No information about this author
Zilin Xie
No information about this author
et al.
Emergency Management Science and Technology,
Journal Year:
2024,
Volume and Issue:
4(1), P. 0 - 0
Published: Jan. 1, 2024
Respiratory
infectious
diseases
can
cause
public
health
emergencies,
threatening
human
well-being,
social
operation,
and
economic
development.
Clarifying
the
transmission
mechanism
of
respiratory
is
essential
for
control
measures.
We
review
main
research
findings
on
in
recent
decades.
The
source
characteristics
diseases,
airborne
mechanism,
exposure
susceptible
persons,
infection
risk
assessment
methods
are
discussed.
Given
that
dynamic
scenario
disease
has
attracted
wide
attention
years,
we
summarize
effects
movement
indoor
airflow,
pathogen
diffusion,
exposure.
Considering
everyday
use
facemasks,
facemasks
also
Finally,
future
prospects
proposed.
be
comprehensively
explored
by
delving
into
patients'
pathological
personnel
protection
This
exploration
facilitated
establishing
a
multi-pose
manikin
database,
enabling
personalized
refined
evaluations.
Interdisciplinary
cooperation
will
play
pivotal
role
fostering
holistic
understanding.
Furthermore,
it
crucial
to
account
impact
individuals'
activity
patterns
dynamics.
expected
reference
emergency
management.
Language: Английский
Addressing actual and community expectations on CO2 concentrations within indoor spaces – A reasonably practicable methodology using CO2 concentration to assess ventilation quality to indoor spaces
Indoor Environments,
Journal Year:
2025,
Volume and Issue:
unknown, P. 100101 - 100101
Published: June 1, 2025
Language: Английский
An evaluation of the risk of airborne transmission of COVID ‐19 on an inter‐city train carriage
Indoor Air,
Journal Year:
2022,
Volume and Issue:
32(10)
Published: Oct. 1, 2022
Experiments
were
conducted
in
an
UK
inter-city
train
carriage
with
the
aim
of
evaluating
risk
infection
to
SARS-CoV-2
virus
via
airborne
transmission.
The
experiments
included
in-service
CO2
measurements
and
measurement
salt
aerosol
concentrations
released
within
carriage.
Computational
fluid
dynamics
simulations
airflow
also
used
visualise
patterns,
efficacy
HVAC
filter
material
was
tested
a
laboratory.
Assuming
infectious
person
is
present,
for
1-h
journey
estimated
be
6
times
lower
than
full
day
well-ventilated
office,
or
10-12
poorly
ventilated
office.
While
absolute
typical
likely
low,
case
where
particularly
individual
on-board,
there
potential
number
secondary
infections
occur
during
journey.
Every
effort
should
therefore
made
minimize
these
carriages.
Recommendations
are
given
use
sensors
evaluation
transmission
on
Language: Английский
Reducing the contaminant dispersion and infection risks in the train cabins by adjusting the inlet turbulence intensity: A study based on turbulence simulation
Tiantian Wang,
No information about this author
Yaxin Zheng,
No information about this author
Yibin Lu
No information about this author
et al.
The Science of The Total Environment,
Journal Year:
2024,
Volume and Issue:
930, P. 172735 - 172735
Published: April 24, 2024
Language: Английский
Mitigating airborne infection risks in public transportation: A systematic review
Transport Policy,
Journal Year:
2024,
Volume and Issue:
155, P. 309 - 320
Published: July 9, 2024
Airborne
infections
pose
significant
challenges
to
public
transportation
systems
which
can
result
in
decline
ridership
levels
and
financial
stress
for
operators.
This
systematic
review
presents
a
comprehensive
overview
of
measures
strategies
employed
by
ground
agencies
protect
passengers
staff
while
ensuring
the
uninterrupted
operation.
study
also
conducted
bibliometric
analysis
provide
insights
into
key
topics,
publication
patterns,
major
contributors
field
airborne
transmission
research
transportation.
We
have
included
studies
published
from
January
2003
June
2024,
reported
recommendations
managing
reduce
virus
transmission.
Of
2848
initially
identified
studies,
69
met
our
eligibility
criteria.
Our
four
prevent
transportation,
including
air
quality
improvement,
cleaning,
mask-wearing,
social
distancing
vehicles
stations.
While
poses
challenge
integration
crowd
management
techniques
technology-driven
information
dissemination
effective
capacity.
The
adoption
solutions,
such
as
efficient
filtration
systems,
automated
mask
detection
mechanisms,
ultraviolet
disinfection
devices,
real-time
passenger
information,
is
required
implement
these
effectively.
Transportation
utilize
an
infection
risk
calculator
during
pandemics
beyond
assess
mitigate
various
modes
Lessons
Covid-19
pandemic
underscored
need
developing
advanced
technologies
enhance
safety
Language: Английский
Active Air Monitoring for Understanding the Ventilation and Infection Risks of SARS-CoV-2 Transmission in Public Indoor Spaces
Atmosphere,
Journal Year:
2022,
Volume and Issue:
13(12), P. 2067 - 2067
Published: Dec. 8, 2022
Indoor,
airborne,
transmission
of
SARS-CoV-2
is
a
key
infection
route.
We
monitored
fourteen
different
indoor
spaces
in
order
to
assess
the
risk
transmission.
PM2.5
and
CO2
concentrations
were
simultaneously
understand
aerosol
exposure
ventilation
conditions.
Average
highest
underground
station
(261
±
62.8
μgm−3),
followed
by
outpatient
emergency
rooms
hospitals
located
near
major
arterial
roads
(38.6
20.4
respiratory
wards,
medical
day
units
intensive
care
recorded
range
5.9
1.1
μgm−3.
Mean
levels
across
all
sites
did
not
exceed
1000
ppm,
ward
(788
61
ppm)
pub
(bar)
(744
136
due
high
occupancy.
The
estimated
air
change
rates
implied
that
there
sufficient
these
manage
increased
probability
unit
hospital
3,
was
1.6-times
2.2-times
higher
than
waiting
4
5,
respectively.
temperature
relative
humidity
at
most
below
27
°C,
40%
and,
with
footfall
limited
exchange,
such
as
unit,
indicate
airborne
Language: Английский
Predicting aerosol transmission in airplanes: Benefits of a joint approach using experiments and simulation
International Journal for Numerical Methods in Fluids,
Journal Year:
2024,
Volume and Issue:
96(6), P. 991 - 1010
Published: Feb. 26, 2024
Summary
We
investigate
the
transmission
of
aerosol
particles
in
an
airplane
cabin
with
a
joint
approach
using
experiments
and
simulation.
Experiments
were
conducted
realistic
aircraft
heated
dummies
acting
as
passengers.
A
Sheffield
head
generator
was
used
to
emulate
infected
passenger
particle
numbers
measured
at
different
locations
throughout
quantify
exposure
other
The
same
setting
simulated
computational
fluid
dynamics
model
consisting
Lagrange
continuous
phase
for
capturing
air
flow,
coupled
suspended
discrete
represent
aerosols.
Virtual
measurements
derived
from
simulation
compared
experiments.
Our
main
results
are:
experimental
setup
provides
good
well
suited
validation,
does
correctly
reproduce
fundamental
mechanisms
dispersion
simulations
can
help
improve
understanding
example
by
visualizing
distributions.
Furthermore,
findings
it
possible
crucially
setup,
proving
that
feedback
between
numerical
hardware
world
is
indeed
beneficial.
Language: Английский