Aerobiological Engineering presents the following poster for use in education, engineering, and microbiology. It covers the range of airborne, waterborne, and foodborne pathogens that are encountered in the modern world and places into perspective the seemingly unlimited number of microbes that currently affect the world population. These color posters are 36" wide by 24" high (actual graphic size) and can be printed in high resolution on high quality glossy paper stock. The image below is reduced to about one-fifth size.