Extreme Events and Public Health - swsenate.nhs.uk · • Respiratory disease from mould & damp ......
Transcript of Extreme Events and Public Health - swsenate.nhs.uk · • Respiratory disease from mould & damp ......
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Extreme Events and Public Health
Ishani Kar-Purkayastha, Centre for Radiation, Chemicals and Environmental Hazards
South West Clinical Senate Council Meeting28/11/2019
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Making the case for Health
Extreme Events
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Cold Weather
Extreme Events
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Deaths over the year
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• More people die in the winter than in the summer
• Deaths tends to peak in January, commonly the coldest month of the year in
England and Wales
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Mean daily deaths and temperature by month, five-year average , England and Wales
Five-year average mean monthly deaths Five-year average mean monthly temperature
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Excess winter deaths in England• EWD = winter deaths - average
non-winter deaths
• 80% aged 75+ (but not only the very old)
• Large degree of fluctuation year on year
• Level has been falling since 1950s – however 2017/18 highest EWDs (50,100) since 1975/76
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What happens during cold weather?
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Snow and ice also cause:
• disruption to service provision
• reduction in access to essential services
• increase the risk of falls and injuries
Reference: 2009 Annual Report of the
Chief Medical Officer. Original source:
Donaldson GC, Keatinge WR. Early
increases in ischaemic heart disease
mortality dissociated from and later
changes associated with respiratory
mortality after cold weather in south
east England. J Epidemiol Community
Health. 1997 Dec;51(6):643-8.
Deaths caused by
cardiovascular conditions
peak first followed by stroke
and then respiratory.
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Heat
Extreme Events
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Health Impacts: Heat
Summer 2003 - 30,000 deaths in Europe; 15,000 deaths in France
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01jan2003 01apr2003 01jul2003 01oct2003 01jan2004date
age >75 age 65-74
age 15-64 age 0-14
Statistically significant excess mortality estimates over heatwave periods, England
Year
Age group 2003 2006 2009 2010 2011 2012 2013 2016 2017 2018
<65 years 301 366 - - 103 - - - - -
65+ years 2234 2323 272 - 202 170 - 908 778 863
Overall Cumulative
Excess 2535 2689 272 - 305 170 - 908 778 863
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Syndromic surveillanceGP in hours daily heat/sun stroke consultations (7 day moving average) by age
group 1 June to 15 Sept 2013.
9 Extreme Events & Health Protection.
Source: Smith S, Elliot AJ, Hajat S et al. Estimating the burden of heat/sun stroke in England during the 2013 summer heatwave
using syndromic surveillance. J Epidemiol Comm Health (in press) 2016
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Mental health and high temperatures
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Relationship of risk of death and temperature in
patients with psychosis, dementia and
substance misuse in England (Page et al, 2012)
Relationship between suicide and temperature
in England and Wales (Page et al, 2007)
• Significant gaps exist in our
understanding of the impact of heat on
mental health
• The strongest evidence exists for an
increased risk of suicide in high
temperatures
• Risk of hospital admission for mental
illness increases in high temperatures
• Weak evidence exists of increased all-
cause mortality in those with mental
illness
• Evidence of worsening of symptoms of
mental illness with heat is mixed
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Flooding
Extreme Events
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Health impacts of flooding
Direct health effects
Associated with flood water and its
debris:
• Drowning (walking or driving
through flood water)
• Physical trauma (concealed or
displaced objects; electrocution,
fire)
• Skin & gut infections from
contaminated flood water
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Longer-term health effects
Occur as a consequence of flooding:
• Mental health impacts
(secondary stressors)
• Carbon monoxide poisoning
• Respiratory disease from mould
& damp
• Rodent-borne disease
• Other health effects such as
heart attacks
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Not just the weather
Sustainability and Extreme Events
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Which regions were most affected?
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• Wales experienced the highest EWM index in 2017/18
• The North East, North West, West Midlands, and East of England
also experienced a higher EWM index than the rest of the country
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Excess Winter Mortality – UK vs Europe
• Almost twice the rate of excess deaths of colder countries such as Finland
• Reasons thought to be building design and differences in institutional and individual
behaviour – better adapted?
• Multiagency action is required to address wider determinants of health, such as
socioeconomic inequalities, fuel poverty and housing energy efficiency
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Contribution of cold homes to mortality
Presentation title - edit in Header and Footer
Cold comfort: The social and environmental determinants of excess winter deaths in England, 1986-96, Wilkinson et al
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Who is affected?
• Whilst the burden of EWDs is primarily seen in older age groups, EWDs are
seen across the life course
• EWDs represent an important health inequality and many are preventable
• There are a number of factors which contribute to EWDs:
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Housing and
economic
factorsCost of fuel
Household
income
Energy
efficiency of the
home
Individual vulnerability to
health effects of cold
Attitudes to cold
and associated
behaviours
Seasonal factors: weather, flu
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Flooding: Secondary Stressors
• Economic
• Difficulties with
compensation/Insurance
• Problems with recovery and
rebuilding homes
• Loss of physical possessions
or resources
• Health
o New or continuing health concerns
or conditions
o Lack of access to healthcare
o Lack of access to psychosocial care
o Lack of access to prescription
medication
• Education and Schooling
• The media
• Familial worry
• Leisure and recreation
• Changes in the view of the world
or oneself
Lock S, Rubin GJ, Murray V, Rogers MB, Amlôt R, Williams R. Secondary
Stressors and Extreme Events and Disasters: A Systematic Review of
Primary Research from 2010-2011. PLOS Currents Disasters. 2012 Oct 29
[last modified: 2012 Nov 27].
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Not just the extremes
Sustainability and Extreme Events
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Risk curve for all cause mortality for the North East
(October-March) and the attributable fractions at
different temperature thresholds
Presentation title - edit in Header and Footer
.81
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1.4
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Rela
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isk (
95%
CI)
northeast
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-5 0 5 10 15
Temperature, degrees C
Linear mortality –
temperature
relationship from
threshold 6ºC
Most
winters,
few days
< 2ºC
Majority of cold-
attributable deaths at
temps above 2ºC
Hajat et al, Public Health 2016
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Heat effects increase with extremes, but
not restricted to them….
Hajat et al, Heat-related and cold-related deaths in England and Wales: who is at risk?
Occup Environ Med 2007;64:93–100
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Actions for Health
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Cascade
of
Cold
Weather
Alerts
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Preventing EWDs
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The NICE guidelines (NG6) for reducing the risk of death and ill
health associated with living in a cold home aims to improve
the health and wellbeing of people vulnerable to the cold,
further detail is provided on the next slide.
The Cold Weather Plan for England recommends a series of
steps to reduce the risks to health from cold weather for:
• the NHS, LAs, social care, and other public agencies
• professionals working with people at risk
• individuals, local communities and voluntary groups
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What does this mean for the NHS?
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Health and Wellbeing Boards, CCGs, and wider NHS:
• Develop a strategy to address the health consequences of cold homes
• Provide a single-point-of contact health and housing referral service for people living in
cold homes to provide tailored solutions
• Raise awareness among practitioners and the public about how to keep warm at home
• Train health and social care practitioners to help people whose homes may be too cold
Secondary healthcare practitioners:
• Identify people at risk of ill health
from living in a cold home*
• Discharge vulnerable people from
health or social care settings to a
warm home
Primary healthcare practitioners:
• Identify people at risk of ill health
from living in a cold home*
• Make every contact count by
assessing the heating needs of
people who use primary health
and home care services
The NICE guidelines provide some specific recommendations for the NHS which are
summarised below. These cannot happen in isolation and require action by, and collaboration
with, Local Authority and other stakeholders.
*advice on how to identify people at risk is provided in the NICE guidelines
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Looking ahead…
Extreme Events and Health Protection
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Future scenarios: UKCP 18
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Adaptation AND mitigation
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‘Adaptation is the only
response available for the
impacts that will occur over
the next several decades
before mitigation measures
can have an effect.’
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Extreme Events and Climate Change
• Extreme Events already affect thousands of people
across England and cause huge health and economic
impacts
• Extreme events will increase in frequency, duration and
intensity because of climate change
• Impacts of adverse weather not just at extremes
.
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Priority risks in CCRA2
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National Adaptation Programme
2nd National Adaptation Programme (NAP#2) published June 2018
PHE deliverable:
• Develop a single adverse weather and health plan, bringing together and
improving existing guidance with an aim to mainstream action within the
health system and local communities, reduce health risks associated with
adverse weather and address the health risks identified in CCRA2.
PHE Implementation of the National Adaptation Programme
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Shift in focus
• Expand from an EPRR focus to a year round strategic preventative
approach
• Cross-sectoral action to reduce vulnerabilities
• Maximise co-benefits
Extreme Events & Health Protection
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Commitment to co-production
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Some questions
What are the risks to the NHS/ health sector from extreme weather/ climate
change?
- Changing demand on service
- Vulnerabilities arising as a result of health/social care infrastructure
- E.g. overheating in wards; care homes
What Actions to address these risks?
Mitigation – Reduce healthcare’s carbon footprint
Adaptation – Prepare for extreme weather and climate risk
Leadership/ advocacy to protect public health from climate change
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Thank you!
Acknowledgements:
Virginia Murray, Owen Landeg, Stephen Dorey, Carla Stanke, Carl Petrokofsky
Thomas Waite, Ross Thompson, Emer O’Connell, Mattea Clarke
Contact: