bacteriology

Bacteria living in animals

Salmonella:

Brucella:

Yersinia Pestis:

Salmonella: reptiles, poultry
Brucella: cattle, goats

Yersinia Pestis: rodent

Bacteria living in environment

Clostridium tetani:

Vibrio cholerae:

Legionella:

Clostridium tetani: soil

Vibrio cholerae: water

Legionella: water systems

Bacteria on inanimate objects

C difficile: 

MRSA:

C. difficile: spores on medical equipment, door handles, bed rails, toilet seats

MRSA: personal items (towels)

Bacteria with prominent capsules

Streptococcus pneumoniae, Klebsiella pneumoniae and Neisseria meningitidis

Bacteria with flagella

E.coli and Salmonella enterica

Bacteria with pilli

Neiserria gonorrhoeae and E.coli 

Bacteria forming endospores

Clostridium (C. diff) and Bacillus spp

Bacteria that form biofilms

Pseudomonas aeruginosa, Staphylococcus epidermidis

Bacteria secreting exotoxins

Clostridium botulinim (neurotoxin), Vibrio cholerae (enterotoxin)

Bacteria secreting endotoxin

LPS from Salmonella and E.coli

Bacteria secreting enzymes

Clostridium perfringens: collagenase 

S. aureus: coagulase 

Psychrophiles

Listeria monocytogenes

Mesophiles

E.coli, S. aureus

Thermophiles

Campylobacter jejuni

Acidophiles

Halobacter pylori

Alkaliphiles

some Bacillus spp

Obligate aerobes

Need O2. Mycobacterium tuberculosis

Obligate anaerobes

Clostridium tetani

Facultative anaerobes

with or without O2, prefer O2. E.coli, S. aureus (gut bacteria)

Aerotolerant anaerobes

tolerate O2 but don’t use it. Streptococcus pyogenes

Microaerophiles

need low O2. Campylobacter jejuni