Iowa Climate Science Educators Forum Infectious Diseases - bugs and vector Dr. Yogi Shah MD, MPH Des Moines University.

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Presentation transcript:

Iowa Climate Science Educators Forum Infectious Diseases - bugs and vector Dr. Yogi Shah MD, MPH Des Moines University

Climate Change and Human Health Global climate change effects: Temperature Precipitation Humidity Storms and Flooding Heat Vector Biology Air Pollutants Food Supply Morbidity / Mortality / Displacement Cardiovascular and respiratory mortality Infectious Disease Respiratory Diseases Malnutrition Mental Health

Bugs and Vectors

Vectors Infectious Disease Mosquitoes Malaria Dengue Chikungunya West Nile Virus Ticks Lyme Climate change Temperature Precipitation Humidity

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: Temperature Vector Biology Infectious Disease 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). Patz J A, and Olson S H PNAS 2006;103: c =86f 20c= 68f

Patz J A, and Olson S H PNAS 2006;103: c =86f 20c= 68f

Number of malaria cases- largest since % increase from 2008 CDC

Global climate change effects: Temperature Mosquitoes Malaria Dengue Chikungunya West Nile Virus

Chikungunya(ChikV)

 Mosquito ( Aedes aegypti and Ae. Albopictus) -viral infection

Ae. Albopictus distribution 2007

Global climate change effects: Temperature Mosquitoes Malaria Dengue Chikungunya West Nile Virus

West Nile Virus Disease

 Mosquito (Culex Pipiens) - West Nile virus (WNV)

1999

2002

2005

,674

Climate Change and Human Health Global climate change effects: Temperature Precipitation Humidity Storms and Flooding Heat Vector Biology Air Pollutants Food Supply Morbidity / Mortality / Displacement Cardiovascular and respiratory mortality Infectious Disease Respiratory Diseases Malnutrition Mental Health

 Dr. Shah MD, MPH   Des Moines University