Classification of pathogenic bacteria - Gram negative

Question 1

Cocci

Answer 1

• Neisseria spp.

- Moraxella catarrhalis

Question 2

Neisseria meningitidis

Answer 2

Inflame meninges and septicaemia

Question 3

Neisseria gonorrhoea

Answer 3

Urethritis and inflammatory pelvic disease

Question 4

Moraxella catarrhalis

Answer 4

Respiratory tract infection prevalent in those with underlying lung pathology

Question 5

Coliforms

Answer 5

Organisms in enterobacterioceae family in gut

Use lactose fermentation test

Question 6

Ecoli

Answer 6

Lactose fermenter
Cause UTI
Very virulent

Question 7

Enterotoxogenic E.coli

Answer 7

Travellers diarrhoea

Question 8

Enterohaemorrhage E.coli

Answer 8

Bloody diarrhoea

Question 9

Salmonella spp.

Answer 9

Non lactose fermenter and over 1500 serotypes

Question 10

Salmonella enterica

Answer 10

Self limiting enterocolitis with or without bloody diarrhoea

Question 11

Salmonella typhi

Answer 11

Cause typhoid fever

Question 12

Shigella

Answer 12

Lactose fermenter and cause of diarrhoea

Question 13

Klebsiella spp

Answer 13

Cause of UTI and pneumonia

Question 14

Proteus spp

Answer 14

Cause UTI

Question 15

Curved bacilli

Answer 15

Camplylobacter found in chicken flocks which causes bloody diarrhoea

Question 16

Spiral bacilli

Answer 16

Helicobacter pylori - human stomach, cause ulcers

Question 17

Haemophilius influenza

Answer 17

Cocco bacilli and cause respiratory tract infections and the capulate form causes meningitis

Question 18

Pseudomonas spp

Answer 18

Non lactose fermenter found in drains and sinks and can cause acquired sepsis
Sensitive to limited range of antibiotics

Question 19

3 Anaerobes

Answer 19

Bacteriodes fragilis, prevotella and porphyromonas

Question 20

Bacteria which cannot be gram stained or cultured

Answer 20

Mycobacteria, chlamydia and spirochaetes

Question 21

Mycobacterium

Answer 21

Use ZN stain as resistant to acid/alkali decolourisation

Cause TB and can cause leprosy

Question 22

Spirochaetes

Answer 22

Syphilis
Lymes disease
Leptosporosis - liver and renal failure
Use dark ground microscopy, immunofluorescence or serology

Question 23

Chlamydia

Answer 23

Detect by culturing in cells or NAAT on urine or swabs

Respiratory infection