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Transcript 
Iowa Climate Science Educators Forum
Infectious Diseases - bugs and vector
Dr. Yogi Shah MD, MPH
Des Moines University
Climate Change and Human Health
Storms and
Flooding
Heat
Global climate
change effects:
Temperature
Precipitation
Humidity
Morbidity / Mortality
/ Displacement
Cardiovascular and
respiratory mortality
Vector Biology
Infectious Disease
Air Pollutants
Respiratory Diseases
Food Supply
Malnutrition
Mental Health
Bugs and Vectors
Climate change
Temperature
Precipitation
Humidity
Ticks
Lyme
Vectors
Infectious
Disease
Malaria
Mosquitoes
Dengue
Chikungunya
West Nile
Virus
What makes Infectious
Diseases Our Issue?
More than 30 agents have
emerged during the past two
decades
Vectors
Mosquitoes and climate
Temp. dependent
30c =86f
20c= 68f
Climate change can sting us
literally
Global climate
change effects:
•
Vector Biology
Infectious Disease
Temperature
Mosquitoes
Malaria
Dengue
Chikungunya
West Nile Virus
Malaria
Mosquito (Anopheles) –
Plasmodium (P. Falciparum, P. Vivax..)
200 million cases/year
600,000 deaths
30c =86f
20c= 68f
Relationship between temperature and malaria parasite development time inside the
mosquito (“extrinsic incubation period” or EIP).
30c =86f
20c= 68f
Patz J A , and Olson S H PNAS 2006;103:5635-5636
30c =86f
20c= 68f
Patz J A , and Olson S H PNAS 2006;103:5635-5636
Number of malaria caseslargest since 1971
50% increase from 2008
CDC
Malaria
Global climate
change effects:
•
Temperature
Mosquitoes
Dengue
Chikungunya
West Nile Virus
Chikungunya(ChikV)
Mosquito (Aedes aegypti and Ae.
Albopictus) -viral infection
Ae. Albopictus distribution 2007
Malaria
Global climate
change effects:
•
Temperature
Mosquitoes
Dengue
Chikungunya
West Nile
Virus
West Nile Virus Disease
Mosquito (Culex Pipiens) West Nile virus (WNV)
1999
1999
2002
2005
5,674
62
712
Climate Change and Human Health
Storms and
Flooding
Heat
Global climate
change effects:
Temperature
Precipitation
Humidity
Morbidity / Mortality
/ Displacement
Cardiovascular and
respiratory mortality
Vector Biology
Infectious Disease
Air Pollutants
Respiratory Diseases
Food Supply
Malnutrition
Mental Health
Dr. Shah MD, MPH
[email protected]
Des Moines University
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