| Description | Bacteria (genus species) | Clinical Manifestations |
| Gram - corkscrew, motile, grow on Kelly's medium (difficult), aniline dyes (Giemsa or Wright); spread by lice or ticks with rodent reservoir | |
| Gram + rods in long chains, sporing, non-motile; protein capsule; lethal factor and edema factor (A subunit) and protective antigen (B subunit); found in soil or livestock; vaccine | |
| Poorly gram staining, use silver; corkscrew with hooks, very small, culture blood or CSF on broth or agar medium, darkfield, smear with Giemsa, MAT; food/water with inf. urine | |
| Gram + cocci strips, cat. -, lancefield A, B-hemolytic, bacitracin sens., + PYR test, rapid on blood media (aero/anaero); capsule, many virulence factors; UR tract and skin; resp. | |
| Gram + cocci clusters, cat. +, coag. +, rapid growth on non-selective media (aero/anaero); capsule, protein A; multiple enzymes; TSST-1, Enterotoxin A/B, exoliatin; flora of skin | |
| Acid fast thin rods, non-motile, sporing; stain with Ziehl-Neelsen, PCR; Cord factor, sulfatides, Wax D; spread through respiratory droplets with humans as only reservoir | |
| Gram - rods, motile, ferments lactose, green metallic sheen on EMB, pink-purple on MacConkey, O/H antigens; O antigen, K1 antigen, H antigen, adhesins; LT, ST, SLT toxins; GI/food | |
| Gram - rods in aero culture, motile, phototrophic, lactose ferm. -, oxidase +/nitrate -, blue-green pigment; exotoxin A, exoenzyme S, elastase, phospholipase C, endotoxin; ubiqui | |
| Weakly gram - rod shaped intracellular; MIF followed by Western blot or PCR; transmitted by body louse with human reservoir courtesy of Brill-Zinsser disease | |
| Acid fast thin rods, non-motile, sporing; stain skin or nerve biopsy (LL) or granulomas (TL) with Ziehl-Neelsen; Cord factor, sulfatides, Wax D; spread via respiratory secretions | |
| Gram + rods in anaero culture, terminal sporing, motile; * toxin: inhibition of vesicular exocytosis and GABA or Gly release in skeletal muscle; not in body, spores (soil); vaccine | |
| Acid fast thin rods, non-motile, sporing; stain with Ziehl-Neelsen, PCR; Cord factor, sulfatides, Wax D; spread through respiratory droplets with humans as only reservoir; vaccine | |
| | Description | Bacteria (genus species) | Clinical Manifestations |
| Gram + rods, non-spore, tumbling motility; blood culture using cold temps; hemolysin, *lysin O; endotoxin (lipid A); grows intracellular in gut; contaminated dairy and during birth | |
| Gram + cocci strips, catalase -, lancefield group B, B-hemolytic, bacitracin resistant, CAMP test, PCR; female lower GI/GU tracts, can be vertically transmitted during birth | |
| Weakly gram - rod shaped intracellular; MIF followed by Western blot or PCR; transmitted by ticks | |
| Gram + diplococci strips, lancet shaped, cat. -, no lancefield, A-hemolytic, optichin sens.; polysaccharide capsule; *lysin, IgA protease; UR or sinuses; vaccine of capsular PS | |
| Gram - diplococci, non-motile, non-sporing, oxidase +, cat. +, meta. glucose; Thayer-Martin medium and chocolate blood agar; Pili, Opa, Por B; IgA protease; LOS; contact or birthin | |
| Gram - corkscrew, very small, motile; diagnosed from ECM; spread by Ixodes deer tick with deer reservoir for tick and mouse reservoir for tick larvae | |
| Weakly gram - rod shaped intracellular; cell culture or use direct antigen detecting, ELISA, or PCR of urine; LPS; transmitted by intimate contact or transmitted during birth | |
| Gram + rods, anaero culture/stain aspirates, subterminal sporing, motile; various exotoxins; contact of soil with puncture/deep wounds; found in human GI tract and soil | |
| Gram - diplococci, non-motile, non-sporing, ox. +, cat. +, meta. gluc./malt.; Thayer-Martin/chocolate blood agar; Capsule, Pili, Por B; iron acq., IgA protease; LPS; resp. droplets | |
| Gram + rods in v-shaped pairs, non-spore, non-motile; Loeffler media, black colonies on K+ tellurite; pseudomembrane; * toxin; spread by respiratory droplets; in resp. tract; vacci | |
| Gram - small/pleomorphic rods, blood media, diag. from X & V factors; capsule (polyribitol phosphate); IgA protease; LPS; commensal trans. via resp. droplets; conjugated vaccine | |
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