Bacteria Flashcards
Staphylococcus aureus Gram? Shape? Hemolysis? Catalase? Coagulase?
Gram + Coccus (grape-like clusters) Beta-hemolytic Catalase + Coagulase +
Staphylococcus epidermidis
Gram?
Catalase/Coagulase?
Clinical Presentation
Gram+ Aerobic Cat +/Coag - Coccus (biofilms) Infects Prosthetic valves/joints (major cause)
Streptococcus pneumoniae (pneumococcus) Gram? O2 use? Shape? Hemolysis? Catalase? Main virulence factor? Vaccines
Gram + Microaerophilic Coccus (pairs/lancet-shaped chains) Alpha-hemolytic Catalase - Antiphagocytic Capsule PPV (Pneumovax), PCV (Prevnar)
Streptococcus pyogenes (GAS) Gram? O2 use? Shape? Hemolysis? Catalase? Virulence and Diseases
Gram + (Lancefield Group A) Microaerophilic Coccus (chains/pairs) Catalase - Beta-hemolytic Superantigens! Scarlet fever
Streptococcus agalactiae (GBS) Gram? O2 use? Shape? Hemolysis? Catalase? Diseases
Gram + Microaerophillic Coccus (chains/pairs) Beta-hemolytic Catalase - Postpartum endometritis
Enterococcus (faecalis) Gram? O2 use? Hemolysis? Diseases
Gram+ Aerobic Coccus (obvi) Gamma-hemolytic UTI
Bacillus anthracis
Gram+
Bioterrorism agent
Neisseria Meningitidis
Gram -
Coccus
Neisseria Gonorrhoeae
Gram -
Coccus
Acinetobacter
Gram-
Rod
Enterobacter
Gram-
Rod
Escherichia coli Gram? Shape? O2 use? Fermentation?
Gram-
Rod
Facultative anaerobe
Ferments lactose
EPEC
Clinical Features
Epidemiological Features
Virulence Factors
Enteropathogenic E. coli
Watery diarrhea, vomiting
Infants in developing countries
Bundle-forming pilus, attaching and effacing
EHEC
Clinical Features
Epidemiological Features
Virulence Factors
Enterohemorrhagic
Watery diarrhea, hemorrhagic colitis, HUS
Food/water-borne, developing countries
Shiga toxins, attaching and effacing
ETEC
Clinical Features
Epidemiological Features
Virulence Factors
Enterotoxogenic
Watery diarrhea
Childhood/Traveler’s diarrhea in developing countries
Pili, Heat labile/stable enterotoxin (LT/ST)
EAEC
Clinical Features
Epidemiological Features
Virulence Factors
Enteroaggregative
Mucousy diarrhea
Childhood diarrhea
Pili, cytotoxins
EIEC
Clinical Features
Epidemiological Features
Virulence Factors
Enteroinvasive
Dysentery, watery diarrhea
Food-borne
Cellular invasion, intracellular motility
UPEC
Clinical Features
Epidemiological Features
Virulence Factors
Uropathogenic
Cystitis, pyelonephritis
Sexually active women
Type I and P fimbriae, hemolysin, path islands
NMEC
Clinical Features
Epidemiological Features
Virulence Factors
Neonatal Meningitis-causing
Acute meningitis
Neonates
K1 capsule, S fimbriae, cellular invasion