Pathogenic Bacteria - List of Pathogenic Bacteria By Basic Laboratory Characteristics

List of Pathogenic Bacteria By Basic Laboratory Characteristics

Following are the genera that contain the most important human pathogenic bacteria species:

Genus Important species Gram staining Shape Capsulation Bonding tendency Motility Respiration Growth medium Intra/Extracellular
Bordetella
  • Bordetella pertussis
Gram-negative Small coccobacilli Encapsulated singly or in pairs aerobic Regan-Lowe agar extracellular
Borrelia
  • Borrelia burgdorferi
Gram-negative, but stains poorly spirochete Long, slender, flexible, spiral- or corkscrew-shaped rods highly motile anaerobic (difficult to culture) extracellular
Brucella
  • Brucella abortus
  • Brucella canis
  • Brucella melitensis
  • Brucella suis
Gram-negative Small coccobacilli Unencapsulated singly or in pairs non-motile aerobic Blood agar intracellular
Campylobacter
  • Campylobacter jejuni
Gram-negative Curved, spiral, or S-shaped
bacilli with single, polar flagellum
Unencapsulated Singly characteristic darting motion microaerophilic Blood agar inhibiting other fecal flora extracellular
Chlamydia and Chlamydophila
  • Chlamydia pneumoniae
  • Chlamydia trachomatis
  • Chlamydophila psittaci
(not Gram-stained) Small, round, ovoid Unencapsulated motile Facultative or strictly aerobic Obligate intracellular
Clostridium
  • Clostridium botulinum
  • Clostridium difficile
  • Clostridium perfringens
  • Clostridium tetani
Gram-positive Large, blunt-ended rods Normally encapsulated mostly motile Obligate anaerobic Anaerobic blood agar extracellular
Corynebacterium
  • Corynebacterium diphtheriae
Gram-positive (unevenly) Small, slender, pleomorphic rods Unencapsulated clumps looking like Chinese characters or a picket fence nonmotile Mostly facultative anaerobic Aerobically on Tinsdale agar extracellular
Enterococcus
  • Enterococcus faecalis
  • Enterococcus faecium
Gram-positive Round to ovoid (cocci) pairs or chains Non-motile Facultative Anaerobic 6.5% NaCl, bile-esculin agar extracellular
Escherichia
  • Escherichia coli
Gram-negative Short rods (bacilli) Encapsulated and Unencapsulated Normally motile Facultative anaerobic MacConkey agar extracellular or intracellular
Francisella
  • Francisella tularensis
Gram-negative Small, pleomorphic coccobacillus Encapsulated Non-motile strictly aerobic (rarely cultured) Facultative intracellular
Haemophilus
  • Haemophilus influenzae
Gram-negative Ranging from small coccobacillus to long, slender filaments Encapsulated or Unencapsulated Non-motile Chocolate agar with hemin and NAD+ extracellular
Helicobacter
  • Helicobacter pylori
Gram-negative Curved or spiral rods
pultiple polar flagella
rapid, corkscrew motility Microaerophile Medium containing antibiotics against other fecal flora extracellular
Legionella
  • Legionella pneumophila
Gram-negative, but stains poorly Slender rod in nature, cocobacillary in laboratory.
monotrichious flagella
unencapsulated motile aerobic Specialized medium facultative intracellular
Leptospira
  • Leptospira interrogans
Gram-negative, but stains poorly Long, very slender, flexible, spiral- or corkscrew-shaped rods Highly motile Strictly aerobic Specialized medium extracellular
Listeria
  • Listeria monocytogenes
Gram-positive, darkly Slender, short rods diplobacilli or short chains Distinct tumbling motility in liquid medium Facultative Anaerobic enriched medium intracellular
Mycobacterium
  • Mycobacterium leprae
  • Mycobacterium tuberculosis
  • Mycobacterium ulcerans
(none) Long, slender rods Unencapsulated nonmotile aerobic M. tuberculosis: Lowenstein-Jensen agar
M. leprae: (none)
extracellular
Mycoplasma
  • Mycoplasma pneumoniae
(none) Plastic, pleomorphic Encapsulated singly or in pairs Mostly facultative anaerobic; M.pneumoniae strictly aerobic (rarely cultured) extracellular
Neisseria
  • Neisseria gonorrhoeae
  • Neisseria meningitidis
Gram-negative Kidney bean-shaped Encapsulated or Unencapsulated diplococci Non-motile aerobic Thayer-Martin agar Gonococcus: facultative intracellular
N. meningitidis
: extracellular
Pseudomonas
  • Pseudomonas aeruginosa
Gram-negative rods encapsulated motile Obligate aerobic MacConkey agar extracellular
Rickettsia
  • Rickettsia rickettsii
Gram-negative, but stains poorly Small, rod-like coccobacillary Slime/microcapsule Non-motile Aerobic (rarely cultured) Obligate intracellular
Salmonella
  • Salmonella typhi
  • Salmonella typhimurium
Gram-negative Bacilli Encapsulated Normally motile Facultative anaerobic MacConkey agar Facultative intracellular
Shigella
  • Shigella sonnei
Gram-negative rods Unencapsulated Non-motile Facultative anaerobic Hektoen agar extracellular
Staphylococcus
  • Staphylococcus aureus
  • Staphylococcus epidermidis
  • Staphylococcus saprophyticus
Gram-positive, darkly Round cocci Encapsulated or Unencapsulated in bunches like grapes Non-motile Facultative anaerobic enriched medium (broth and/or blood) extracellular
Streptococcus
  • Streptococcus agalactiae
  • Streptococcus pneumoniae
  • Streptococcus pyogenes
Gram-positive ovoid to spherical Encapsulated or Unencapsulated pairs or chains nonmotile Facultative anaerobic blood agar extracellular
Treponema
  • Treponema pallidum
Gram-negative, but stains poorly Long, slender, flexible, spiral- or corkscrew-shaped rods highly motile Aerobic none extracellular
Vibrio
  • Vibrio cholerae
Gram-negative Short, curved, rod-shaped with single polar flagellum Unencapsulated rapidly motile Facultative anaerobic blood- or MacConkey agar. Stimulated by NaCl extracellular
Yersinia
  • Yersinia pestis
Gram-negative, stains bipolarly Small rods encapsulated nonmotile Facultative Anaerobe MacConkey or CIN agar Intracellular

Read more about this topic:  Pathogenic Bacteria

Famous quotes containing the words list of, list, bacteria, basic and/or laboratory:

    I made a list of things I have
    to remember and a list
    of things I want to forget,
    but I see they are the same list.
    Linda Pastan (b. 1932)

    Shea—they call him Scholar Jack—
    Went down the list of the dead.
    Officers, seamen, gunners, marines,
    The crews of the gig and yawl,
    The bearded man and the lad in his teens,
    Carpenters, coal-passers—all.
    Joseph I. C. Clarke (1846–1925)

    To the eyes of a god, mankind must appear as a species of bacteria which multiply and become progressively virulent whenever they find themselves in a congenial culture, and whose activity diminishes until they disappear completely as soon as proper measures are taken to sterilise them.
    Aleister Crowley (1875–1947)

    A kiss can be a comma, a question mark or an exclamation point. That’s basic spelling that every woman ought to know.
    Mistinguett (1874–1956)

    For a novelist, a given historic situation is an anthropologic laboratory in which he explores his basic question: What is human existence?
    Milan Kundera (b. 1929)