Using a textbook or a reputable internet source find two Grampositive pathogenic bacteria and two Gramnegative

Question

Using a textbook or a reputable internet source, find two Gram-positive pathogenic bacteria and two Gram-negative

pathogenic bacteria that may be classified as being facuative anaerobes. What tissues or organs do these bacteria target in the human patient? Why is it to their advantage to be able to use either aerobic respiration or anaerobic respiration/fermentation?

Science