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Inquiry Science 9 March 2, 2012 Polio victim in Iron Lung ET # 53: a) What is the difference between a disease causing agent and a disease vector? b) List all of the ways infectious diseases are transmitted. 1. Work on Infectious Diseases Project - Presenting next class Homework: Prepare for Presentation Ring worm SCR #53: Cholera patients MRSA Mosquito – Malaria, West Nile Virus Mouse – Hanta Virus Tick – Lyme Disease ET # 53: What is the difference between a disease causing agent and a disease vector? A disease causing agent is the thing that actually gets inside and causes the disease: Examples: • Viruses • Bacteria • Nematodes (worm-like, ex. hookworms, tape worms, heart worms) • Protists (various single-celled protozoans) A disease vector is the living thing that spreads or transmits the disease (but doesn’t cause the disease: Examples: • Mosquitoes • Rats/mice • Ticks • Birds • Humans! ET # 53: List all of the ways infectious diseases are transmitted. • droplet contact - coughing or sneezing on another person • direct physical contact - touching an infected person, including sexual contact • indirect contact - touching a contaminated surface (ex. door knob, faucet) • airborne transmission - if the microorganism can remain in the air for long periods • fecal-oral transmission - from contaminated food or water sources • vector borne transmission - carried by insects or other animals PowerPoints Save your copy in: Public/All/Hagen Science 9/Infectious Disease PowerPoints/Period #/ Your group members last names You Must Save File by 2:10 pm Is Something Bugging You? Tapeworm Think you are having a bad day?