All pathogens i think

Question 1

IN COMMON?

• Staphylococcus epidermidis
• Pseudomonas aeruginosa
• Streptococcus pneumoniae
• Candida albicans (yeast)

Answer 1

Opportunistic bacterial pathogen

Question 2

In common

Pseudomonas aeruginosa
Escherichia coli
Klebsiella pneumoniae
Legionella pneumophila

Answer 2

Gram negative

Question 3

In common

Staphylococcus species
Streptococcus pneumoniae
Clostridioides difficile
(formerly Clostridium)
Enterococcus species

Answer 3

Gram pos

Question 4

Bacteria

Staphylococcus epidermidis is the leading cause of indwelling device infections

Answer 4

Will distrupt skin barrier

Question 5

Staphylococcus epidermidis coagulase negative staphylococci. What is positive?

Answer 5

S. aureus which is coagulase positive

Question 6

Bcteria 18

Staphylococcus epidermidis

Cause infection associated with: + virulence and toxin

• Ubiquitous commensal skin organism

Answer 6

– ability to readily adhere to plastic
– production of biofilm or “slime”
– relatively low virulence
– produces only limited toxins

Question 7

Bacteria 18

Site: Vaginal and oral mucosa
Opp.Inf: Candidiases or thrush

What organism

Answer 7

Candida ablicans (yeast)

Question 8

Bactera 18

what does Clostridioides difficile cause

Answer 8

Antibiotic-associated diarrhoea
– causes a wide spectrum of disease ranging from:
* asymptomatic carriage (no symptoms)
* diarrhoea (mild to severe)
* colitis and pseudomembranous colitis
– rare cause of disease outside the GI tract

Question 10

Clostridioides difficile

Where, toxins, endospore

Answer 10

• Ubiquitous in soil & water
  – also in hospitals
• Ability to cause infection with production of toxin A, toxin B and binary toxin
• Endospores regarded as major mode of transmission
  – endospores resist many disinfectants
  – remain viable for months in hospital environment

Question 11

Bacteria

Chemotherapy for cancer & Bacteremia / bloodstream

Distruption and OI what is the organism

Answer 11

E.coli

Question 12

Recent viral infection & Pneumonia

Distruption and OI what is the organism

Answer 12

Streptococcus pneumoniae

Question 13

Anti-rejection
medication &
Bacteremia / bloodstream
infection

Distruption and OI what is the organism

Answer 13

Pseudomonas aeruginosa

Question 14

Chara: Escherichia coli

Answer 14

– Gram negative rods, facultative aerobe
– member of the Enterobacteriaceae
– motile by flagella
– in normal gut flora so endogenous infection