Physical or chemical methods to control microbial growth that result in death of the microbe are indicated by the suffixes -stat or -static, whereas those that simply inhibit microbial growth are indicated by the suffixes -cide or –cidal

Acne is a common bacterial skin infection that occurs when the bacteria Propionibacterium acnes infects hair follicles and pores clogged with dead skin cells and sebum.

Vector transmission occurs when a living organism carries an infectious agent on or in its body to a new host

All infectious disease are contagious, but not all contagious diseases are infectious

High Efficiency Particulate Air (HEPA) filtration is commonly used in hospital ventilation systems and biological safety cabinets in laboratories as a physical method of control to prevent transmission of airborne microbes

Communicable diseases are transmissible among individuals and or organisms

The use of narrow-spectrum antimicrobial drugs is preferred in many cases to avoid superinfection and the development of antimicrobial resistance. Broad-spectrum antimicrobial use is really only warranted for serious systemic infections when there is no time to determine the causative agent or for infections with multiple types of microbes

Herd immunity can occur when a population has too few susceptible individuals for a pathogen to continue to transmit successfully between hosts

The growth of a population is strongly governed by the distribution and abundance of the individuals within the population

Eukaryotic organisms are those whose cells have a nucleus and membrane bound organelles, whereas prokaryotic organism cells lack these features