Strain - A genetic variant or specific subtype of a microorganism, such as a virus or bacteria.⏎
Species - One of the most basic units of biological classification, ranking just below the genus and comprising individuals or populations capable of interbreeding.⏎
Staph Infection - An infection caused by any one of several harmful species or subspecies of bacteria of the genus Staphylococcus.⏎
Yeast - A broad group of microscopic fungi that includes harmless forms of yeast used in baking and alcoholic fermentation as well as pathogenic species that can cause disease. ⏎
Vector - An organism (usually an arthropod such as a flea, mosquito, or tick) that carries an infectious agent from one host to another.⏎