You will be able to define and distinguish between the common cold, flu, and what an epidemiologist does. What to expect to learn: Key vocabulary such as agent, communicable, and pathogens defined.How many people are affected by colds, how they become ill and symptoms. Take a look at if cold weather makes one sick. Symptoms of cold versus flu. A visual representation of map of states seeing flu (influenza) activity level.Basic ways to combat disease and means to prevent from becoming sick.Career