Gram Positive Bacteria

Staphylococcus aureus

GPC, FA, skin-to-skin, halotolerant, catalase +, coagulase +, mannitol +, β-hemolytic, MRSA possible

Staphylococcus aureus

Diseases: pyoderma, osteomyelitis, pneumonia, empyema, scalded skin syndrome, toxic shock syndrome, food intoxication.

Staphylococcus epidermidis

GPC, FA, autoinoculation, opportunistic, halotolerant, catalase +, mannitol -, nonhemolytic, Novobiocin S, MRSE

Staphylococcus epidermidis

Diseases: prosthesis infections, neonatal sepsis, nosocomial.

Staphylococcus saprophyticus

GPC, FA, autoinoculation, opportunistic, halotolerant, catalase +, mannitol -, nonhemolytic, Novobiocin R

Staphylococcus saprophyticus

Disease: UTI (cystitis).

Staphylococcus haemolyticus

GPC, FA, autoinoculation, opportunistic, halotolerant, catalase +, β-hemolytic, Novobiocin S.

Streptococcus pyogenes (Group A)

Diseases: strep throat, scarlet fever, necrotizing fasciitis, otitis media, rheumatic fever, glomerulonephritis.

Streptococcus pyogenes (Group A)

GPC, catalase -, AA, β-hemolytic, bacitracin S

Streptococcus agalactiae (Group B)

GPC, catalase -, AA, β-hemolytic, bacitracin R

Streptococcus agalactiae (Group B)

Diseases: postpartum sepsis, endocarditis, neonatal septicemia, pneumonia, meningitis.

Streptococcus pneumoniae

GPC (diplo), catalase -, AA, α-hemolytic, capsule, respiratory, optochin S

Streptococcus pneumoniae

Diseases: pneumonia, meningitis, sepsis, otitis media, sinusitis.

Streptococcus mutans

GPC, catalase -, AA, α-hemolytic, opportunistic, optochin R

Streptococcus mutans

Disease: dental caries.

Enterococcus (Group D)

GPC, catalase -, FA, autoinoculation, bile resistant

Enterococcus (Group D)

Diseases: UTI, endocarditis, antibiotic resistance.

Bacillus anthracis

GPR, A, nonmotile, capsule, anthrax toxin

Bacillus anthracis

Diseases: cutaneous anthrax, pulmonary anthrax.

Bacillus cereus

GPR, FA, motile, food infection, enterotoxin

Bacillus cereus

Disease: gastroenteritis

Clostridium tetani

GPR, OA, environmental, tetanospasmin | Disease: tetanus | Vaccine: TDaP.

Clostridium tetani

Disease: tetanus | Vaccine: TDaP.

Clostridium botulinum

GPR, OA, food intoxication/infection, botulin toxin

Clostridium Botulinum

Disease: botulism.

Clostridium perfringens

GPR, OA, environmental, food infection, multiple toxins

Clostridium perfringens

Diseases: gas gangrene, gastroenteritis.

Clostridioides difficile

GPR, OA, autoinoculation, enterotoxin & cytotoxin

Clostridioides difficile

Disease: antibiotic-associated pseudomembranous colitis (AAPC).

Corynebacterium diphtheriae

GPR, A, palisades, respiratory, metachromatic granules, pseudomembrane

Corynebacterium diphtheriae

Disease: diphtheria | Vaccine: TDaP.

Propionibacterium acnes

GPR, OA, autoinoculation

Propionibacterium acnes

Disease: acne.

Listeria monocytogenes

GPR, FA, food infection, cold enrichment, crosses placenta |

Listeria monocytogenes

Disease: meningitis.

Mycobacterium tuberculosis

AFB, A, respiratory, facultative intracellular, mycolic acid

Mycobacterium tuberculosis

Disease: Tuberculosis Skin Test: PPD

Mycobacterium leprae

AFB, A, skin-skin or respiratory, facultative intracellular parasite

Mycobacterium leprae

Disease: leprosy Test: lepromin skin test