This course is the online version of BIOL 2251. BIOL 2259 is available to current Nursing students with permission of the instructor. It (i) covers aspects of the biology of microorganisms from a clinical perspective, (ii) provides an introduction to the fundamental concepts of infectious disease microbiology, and (iii) discuss microbial diseases affecting the skin, nervous system, cardiovascular system, respiratory system, digestive system, and urinary and reproductive systems. NOTE: This course is not equivalent to BIOL 3261, and is restricted to students who have not received prior credit for BIOL 3261. As well, Biology honours, majors and minors cannot count this course as a Biology Credit, only as an elective. Credit will not be given for both BIOL 2251 and BIOL 2259.