Surveillance for Climate Sensitive Diseasesuchai.net/sites/default/files/inline-files/Dr Kapil...
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Surveillance for Climate Sensitive Diseases
Dr. Kapil GoelSenior Medical Consultant for Clean Cookstoves &
Non-communicable Diseases, CDC India, Delhi
Workshop on Climate Change and Human Health
New Delhi, India
September 23, 2015
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Outline
• Introduction
• Climate sensitive diseases
• Disease surveillance systems in India
• Limitations in surveillance for climate-sensitive diseases
• Way forward
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Introduction• Transmission of many infectious diseases affected by climate
• Climate-sensitive diseases
– Involve pathogens with life cycle outside human hosts
– Among most important global causes of mortality and morbidity, particularly in developing countries like India
– Occur as epidemics, triggered by changes in climatic conditions favouring higher transmission rates
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Which Diseases Most Climate Sensitive?
– Heat stress
– Effects of storms
– Air pollution effects
– Asthma
– Vector-borne diseases
– Water-borne diseases
– Food-borne diseases
High
Low
Sen
siti
vity
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Disease Sensitivity to ClimateDisease Transmission Strength of temporal climate
sensitivity
Malaria Transmitted by the bite of female Anopheles mosquitoes
+++++
Cholera Food- and water-borne transmission +++++
Dengue Transmitted by the bite of female Aedesmosquitoes
+++
Japanese Encephalitis Transmitted by the bite of female Culex and Aedes mosquitoes
+++
Leishmaniasis Transmitted by the bite of female phlebotomine sand flies
+++
Meningococcal Meningitis Air-borne transmission +++
Diarroheal Diseases Food- and water-borne transmission ++
Lymphatic Filariasis Transmitted by the bite of female Culex and Anopheles mosquitoes
++
Influenza Air-borne transmission ++
Source: based on Kuhn, et al., 2005
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Health effects
Temperature-related
Extreme weather-related
Air pollution-related
Increased water and food-borne diseases
Increased vector-borne and rodent-borne diseases
Food and water shortages
Population displacement
CLIMATE
CHANGE
Regional weather changes
Heat waves
Extreme weather
Temperature
Precipitation
Source: based on Patz, et al., 2000
Modulating
influences
Mapping Links Between Climate Change and Health
• Most expected impacts will be adverse but some will be beneficial• May not lead to new health risks, but change frequency or severity of familiar
health risks
Contamination pathwaysTransmission dynamicsAgro-ecosystems, hydrologySocioeconomics, demographics
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Disease Surveillance Systems In India
• Integrated Disease Surveillance Program (IDSP)
• National Vector Born Disease Control Program (NVBDCP)
• Health Management Information System (HMIS)
• Central Bureau of Health Information (CBHI)
• National Polio Surveillance Project (NPSP)
• Revised National Tuberculosis Control Program (RNTCP)
• National AIDS Control Program (NACP)
• National Program for Prevention and Control of Cancer, Diabetes, CVD and Stroke (NPCDCS)
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• Malaria
• ADD (Cholera)
• Typhoid
• Tuberculosis
• Measles
• Polio
• Plague
• Unusual Syndromes
• State Specific Diseases
• HIV, HBV, HCV
• Accidents
• Water Quality
• Outdoor Air Quality
Sentinel Surveillance
Community-based Surveys
NCD Risk factors
Target Diseases In IDSP
No linkage of IDSP data with climate data
Regular Weekly Surveillance
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• Malaria
• Filaria
• Dengue
Diseases under Surveillance
Target Diseases In NVBDCP
Reporting
• Chikungunya
• Japanese Encephalitis
• Kala azar
• Non transmission season - Monthly
• Transmission season - Weakly
• Outbreak - Daily
No linkage of NVBDCP data with climate data
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• Maternal health indicators
• Child health indicators
• Child immunization
• Childhood diseases
• RTI/STI cases
• Family planning
• Laboratory testing data
• Stock positions
• Details of deaths reported
Monthly Surveillance
Target Diseases In HMIS
No linkage of HMIS data with climate data
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Limitations in Surveillance of Climate-Sensitive Diseases
• Lack of high-quality disease surveillance data
• Lack of high quality meteorological climate data
• No linkage of climate data with disease surveillance data
• Limited data sharing
• Limited opportunities for collaborations
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Way Forward• Strengthen disease surveillance and meteorological data
• Link disease surveillance data with meteorological data
• Strengthen interdisciplinary collaborations
• Promote modelling studies of linked data to help develop an Early Warning Signal system for India
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Thank You