Pre-ID Bacteria

Need to memorize these

S. aureus

gram positive aerobe, cocci, staphylococci/clusters, positive for coagulase, common in skin and nose

S. epidermidis

gram-positive aerobe, cocci, staphylococci/clusters, negative for coagulase, common in skin

S. saprophyticus

gram-positive aerobe, cocci, staphylococci/clusters, negative for coagulase, common in genital/perianal areas

viridans streptococci

gram-positive aerobe, cocci, streptococci, alpha-hemolytic, common in oral cavity/respiratory tract

S. pneumoniae

gram-positive aerobe, cocci, streptococci, alpha-hemolytic, diplococci, common in oral cavity/respiratory tract

S. pyogenes

gram-positive aerobe, cocci, streptococci, beta-hemolytic, group A strep, common in skin, throat, vaginal, and GI tracts

S. agalactiae

gram-positive aerobe, cocci, streptococci, beta-hemolytic, group B strep, common in skin, throat, vaginal, and GI tracts

Enterococci (E. faecalis, E. faecium)

gram-positive aerobe, cocci, streptococci, gamma-hemolytic, common in GI tract

Listeria

gram-positive aerobe, bacilli

Bacillus sp.

gram-positive aerobe, bacilli

Corynebacterium sp.

gram-positive aerobe, bacilli, common on skin

Peptostreptococcus

gram-positive anaerobe, cocci, common in GI and oral cavity

Clostridium sp.

gram-positive anaerobe, bacilli, common in GI and oral cavity

Lactobacillus

gram-positive anaerobe, bacilli, common in GI and oral cavity

Propionibacterium

gram-positive anaerobe, bacilli, common on skin

Neisseria meningitidis

gram-negative aerobe, diplococci

Neisseria gonorrhea

gram-negative aerobe, diplococci

Pasteurella

gram-negative aerobe, bacilli, lactose fermenter, positive for oxidase

E. coli

gram-negative aerobe, bacilli, lactose fermenter, negative for oxidase

Klebsiella sp.

gram-negative aerobe, bacilli, lactose fermenter, negative for oxidase

Enterobacter sp.

gram-negative aerobe, bacilli, lactose fermenter, negative for oxidase

Citrobacter sp.

gram-negative aerobe, bacilli, lactose fermenter, negative for oxidase

Pseudomonas sp.

gram-negative aerobe, bacilli, non-lactose fermenter, positive for oxidase

Proteus sp.

gram-negative aerobe, bacilli, non-lactose fermenter, negative for oxidase

Morganella sp.

gram-negative aerobe, bacilli, non-lactose fermenter, negative for oxidase

Serratia sp.

gram-negative aerobe, bacilli, non-lactose fermenter, negative for oxidase

Salmonella sp.

gram-negative aerobe, bacilli, non-lactose fermenter, negative for oxidase

Shigella sp.

gram-negative aerobe, bacilli, non-lactose fermenter, negative for oxidase

Stenotrophomonos sp.

gram-negative aerobe, bacilli, non-lactose fermenter, negative for oxidase

Acinetobacter sp.

gram-negative aerobe, bacilli, non-lactose fermenter, negative for oxidase

Haemophilus influenzae

gram-negative aerobe, coccobacilli, common in respiratory tract

Moraxella catarrhalis

gram-negative aerobe, coccobacilli, common in respiratory tract

Bordetella pertussis

gram-negative aerobe, coccobacilli, common in respiratory tract

Bacteroides sp.

gram-negative anaerobe, common in GI tract

Prevotella sp.

gram-negative anaerobe, common in GI tract

Fusobacterium sp.

gram-negative anaerobe, common in GI tract