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Flashcards in Micro Systems Deck (113)
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1

Normal Dominant Flora of Skin

Staphylococcus epidermidis

2

Normal Dominant Flora of Nose

Staph epidermidis. Colonies by Staph aureus

3

Normal Dominant Flora of Oropharynx

Viridans Group Strep

4

Normal Dominant Flora of Dental plaques

Streptococcus mutans

5

Normal Dominant Flora of Colon

Bacteroides fragilis (more)
E. coli (less)

6

Normal Dominant Flora of Vagina

Lactobacillus
Colonies by E coli and GBS

7

Neonates delivered by Cesarean section re flora?

They have no flora but are rapidly colonized after birth

8

Staph aureus and B cereus food poisoning course

Starts quickly and ends quickly

9

Contaminated seafood

Vibrio parahaemolyticus and V vulnificus (can cause wound infection from contact with contaminated water or shellfish)

10

Reheated rice

"be serious"
B cereus

11

Meats, Mayonnaise, Custard

S aureus

12

Reheated meat dishes leading to watery diarrhea

Clostridium perfringens

13

Improperly canned foods (bulging cans)

Clostridium botulinum

14

Undercooked meat

E coli O157:H7

15

Poultry, meat, eggs

Salmonella

16

Bugs that can mimic appendicitis

Yersinia enterocolitica causes mesenteric adenitis
Nontyphoidal Salmonella
Campylobacter jejuni

17

Causes of Bloody Diarrhea with signs

Campylobacter: Comma or S shaped, grows at 42
Salmonella: Lac-, Flagella
Shigella: Lac-, low ID50
EHEC, EIEC
Yersinia enterocolitica: Daycare outbreaks, pseudoappendicitis
Entamoeba histolytica

18

Causes of Watery Diarrhea

Enterotoxigenic E coli: Traveler's, ST and LT toxin
V Cholerae: comma-shaped, rice-water
C difficile: bloody w/ pseudomembranous colitis
C perfringens: also gas gangrene
Protazoa: Giardia, Cryptosporidium (in immunocompromised)
Rotavirus, Norovirus

19

Pneumonia in neonate (less than 4 weeks)

GBS, E coli

20

Pneumonia in children (4 weeks to 18 years)

"Runts May Cough Chunky Sputum"
RSV, Mycoplasma, C. pneumoniae (school age), Chlamydia trachomatis (infant to 3 years), Streptococcus pneumoniae

21

Pneumonia in adults (18 years to 40 years)

Mycoplasma, C pneumoniae, S pneumoniae

22

Pneumonia in adults (40 years to 65 years)

S pneumoniae, H influenzae, Anaerobes, Viruses, Mycoplasma

23

Pneumonia in elderly

S pneumoniae, Influenza, Anaerobes, H influenzae, H influenzae, Gram- rods

24

Special Nosocomial Infections

Staph, Enteric Gram negative Rods

25

Special Immunocompromised infections

Staphylococcus, Enteric Gram- rods, Fungi, Viruses, Pneumocystis jirovecii - w/ HIV

26

Special infections with aspiration

Anaerobes

27

Special infections w/ EtOH and IV drug users

S pneumoniae, Klebsiella, Staph

28

Special infections in CF

Pseudomonas, S aureus, S pneumoniae

29

Special infections in Post-Viral pt

Staph, H influenzae, S pneumoniae

30

Bugs that cause atypical pneumonia

Mycoplasma, Legionella, Chlamydia