 microbiology - the study of microbes  Microbes – organisms that can only be seen under a microscope...this is what happens when you leave beef (L) or chicken (R) on the counter: it grows E. coli, Salmonella, and Shigella!

 A virus is…  … a microscopic disease causing agent  They are NOT made up of cells  Made of a protective wall with DNA inside it

 made of cells containing DNA  respond to stimuli  take in energy and export waste  reproduce  grow  ( self propelled movement)

 Are they alive?  Yes -  Reproduce  No -  Don’t eat or produce waste, are not made of cells, need a host (virus video)

 Childhood diseases…  Chicken Pox, small pox, yellow fever, warts  Other diseases …  Colds, Influenza (the flu), meningitis, west nile, ebola

 What does NOT work on viruses?  Vaccines are used to treat viruses  What type of vaccines do you know of?

 Bacteria are…  … prokaryotic organisms ( the smallest living thing)  Where do they live?  Soil, Radioactive waste, Water, Plants, Humans, Deep in the earth's crust, Arctic ice, Glaciers, Hot springs, The stratosphere (between 6 to 30 miles up in the atmosphere), Ocean depths

 How do we classify bacteria?  By 3 different shapes  Spherical Usually the simplest ones. These bacteria are called cocci (singular coccus).  Rod shaped These are known as bacilli (singular bacillus).  Spiral These are known as spirilla (singular spirillus).

 Common bacterial diseases  leprosy, tetanus, syphilis, typhoid fever, strep throat, tuberculosis, salmonella, whooping cough

 What is a vector?  Animal disease spreaders that don’t catch the illness  They carry infectious disease (can be passed from one generation to the next)  Examples…  Rats, ticks, and mosquitoes

 What do scientists study?  Microbial pathogens – disease causing agents  Examples?  Virus, Bacteria, Parasite

 How do they study pathogens?  Computer modeling, cell cultures, animals, clinical trials Fluzone® High DoseFluzone® STARTED COMPLETED NOT COMPLETED Serious Adverse Event3617 Adverse Event02 Protocol Violation6027 Lost to Follow-up Withdrawal by Subject10766

 How are diseases spread?  What happens when they spread rapidly?  Epidemic  a disease that is wide spread in a particular area  Pandemic  An epidemic that spreads over a wide area

 An epidemic may be localized to a small region but the number of people affected may be very, very large compared to what is "expected". In this case, it can be called a pandemic even if its geographical spread is not very large. For example, let us say that a disease has an "expected" rate of infection of 15%. When 40% of the population of a state is infected, we have an epidemic on our hands. When 75% of the population is infected, it has reached pandemic proportions.

 1. The name of the disease I am studying is chicken pox. It gets its name from the way it looks like the bumps on a chicken’s skin.  2. A virus causes chicken pox.  3. The symptoms of this disease are first a fever, headache, stomach ache, and then small itchy spots appear on your skin.  4. It is transmitted through the air or by physical contact.  5. You are not likely to catch it because most people get vaccinated for it, or have already had it.