Spreadable diseases such as the flu, colds, or strep throat spread from person to person in several ways.  An example is through direct physical contact, like touching or kissing the person who has the infection. These illnesses can spread through the air if someone sneezes or coughs. Washing your hands well and keeping up to date on all vaccinations are good preventions. Learn more about Contagious Diseases through our Medical Crossword Puzzles.