Day 1

Question 1

What species is described?

“Found in pairs, tetrads, short chains, and irregular clusters ; can be beta or gamma hemolytic; most are facultative anaerobes; non motile and non spore forming; can produce toxins and enzymes; natural habitat of the skin and mucous membranes.”

Answer 1

Staphylococcus spp.

Question 2

Beta hemolytic, catalase positive and coag positive

Answer 2

S.aureus

Question 3

gamma hemolytic
catalase positive
coag negative
novobiocin susceptible

Answer 3

S. epidermis

Question 4

gamma hemolytic
Catalase pos
Coag negative
Novobiocin resistant

Answer 4

S.sapro

Question 5

What organism is the most common cause of staphylococcal infections?

Answer 5

S.aureus

Question 6

What diseases does S. aureus cause? (6)

Answer 6

Sinusitis 
Skin infections 
Toxic shock
Food poisoning 
Nosocomial infections 
Septicemia

Question 7

What diseases does S.epidermis cause?

Answer 7

UTI’s
Post surgical infections
Endocarditis
Infections of indwelling devices and prosthetics

Question 8

What diseases does S.saprophyticus cause?

Answer 8

Opportunistic UTI’s
Wound infections
Septicemia
Non-gonoccocal Urethritis and Prostatitis in males

Question 9

What organism is of major concern in nosocomial infections due to antimicrobial resistance?

Answer 9

S.aureus(MRSA)

Question 10

What organism is the Most common cause of infections in individuals with indwelling devices and prosthetics?

Answer 10

S.epi

Question 11

What organism the suggested agent of non-gonoccocal urethritis and prostatitis in males?

Answer 11

S.saprophyticus

Question 12

What does the catalase test differentiate between in regards to GPC?

Answer 12

Staph spp. and Strep spp.

Question 13

What does the coagulase test differentiate between in regards of GPC?

Answer 13

S.aureus and other Staph spp.

Question 14

What does the Novobiocin susceptibility test differentiate between in regards to GPC?

Answer 14

S.saprophyticus and S.epidermis(other coag neg staph)

Question 15

What antibiotic are the discs impregnated with to differentiate between S.saprophyticus and othe coag neg staph?

Answer 15

5 micrograms Novobiocin

Question 16

What spp. is described :
-found in chains or clusters
-Can be beta or gamma
Facultative anaerobes
-Can be grouped antigenically according to Lancefield grouping
-Normal flora of the alimentary, respiratory and genital tracts
-Natural habitat of the skin and mucus membranes

Answer 16

Streptococcus spp.

Question 17

What disease can result if pharyngitis caused by BSGA is not treated?

Answer 17

Rheumatic Fever and Glomerunephritis

Question 18

Beta hemolytic
Catalase neg
Taxo A sensitive

Answer 18

Streptococcus pyogenes(BSGA)

Question 19

Beta hemolytic
Catalase negative
Taxo A resistant
Causative agent of maternal and neonatal sepsis

Answer 19

S.agalactiae

Question 20

What streptococcus toxin is oxygen STABLE, non-immunogenic, and is a cell bound hemolysin?

Answer 20

Streptolysin S

Question 21

What streptococcus toxin is oxygen Labile?

Answer 21

Streptolysin O

Question 22

What organism is know to produce Streptolysin O?

Answer 22

S.pneumoniae and Clostridium spp.

Question 23

Catalase neg
Alpha hemolytic
Taxo P resistant
Causes opportunistic infections and is normal flora of the upper respiratory tract

Answer 23

Alpha streptococci

Question 24

Catalase neg
Alpha hemolytic 
Taxo P sensitive 
Bile soluble
Autolysing
Resembles water droplets

Answer 24

S.pneumoniae

Question 25

``` Catalase neg Gamma or alpha Taxo P resistant Bile esculin negative Normal flora of the oral cavity, GI tract and female vaginal tract ```

Answer 25

Viridans Streptococci

Question 26

Catalase negative Gamma hemolytic Bile esculin positive

Answer 26

Enterococcus spp

Question 27

What organism is of major concern in nosocomial infections due to its antimicrobial resistance ?

Answer 27

Enterococcus spp. (VRE)

Question 28

What gives S.pneumoniae its virulence and how does this feauture protect the organism ?

Answer 28

Polysaccharide capsule that resists phagocytosis

Question 29

What is another name for Streptococcus agalactiae?

Answer 29

BSGB

Question 30

``` Catalase neg Beta hemolytic Taxo A resistant Sodium hippurate positive CAMP test positive ```

Answer 30

BSGB | S.agalactiae

Question 31

``` Catalase negative Beta hemolytic Taxo A resistant Sodium hippurate negative CAMP test negative ```

Answer 31

Streptococcus not Group A or B

Question 32

``` What causes: Pharyngitis Meningitis Endocarditis Septic Arthritis Infections of the respiratory tract ```

Answer 32

Beta Streptococcus groups C and G

Question 33

What is autolysing?

Answer 33

Cell begins dying

Question 34

Looks like bullseye colony or coin with raised ridges

Answer 34

Streptococcus pneumoniae

Question 35

What species is formerly known as Streptococcus faecalis or Group D Streptococcus?

Answer 35

Enterococcus faecalis

Question 36

What species is described below? - Normal flora in gastrointestinal tract of humans and animals - Opportunistic outside the intestinal tract - Etiological agents of UTI’s - Wound infections - Intra-abdominal abscesses - Nosocomial infections

Answer 36

Enterococcus spp.