4.6

Question 1

legionella found in

Answer 1

• Ubiquitous inhabitants of aquatic environments - both natural and man made

Question 2

genus legionella

Answer 2

• 45 species
  
  • Difficult to see on the gram stain
  • Fastidious in their nutritional requirements
    ○ Will not grow in the lab unless specialised agar plates are used

Question 3

2 species genus legionella

Answer 3

legionella pneumophila

legionella longbeachae

Question 4

most legionella disease caused by

Answer 4

legionella pneumophila

Question 5

legionella pneumophila infection acquired from

Answer 5

○ Outbreaks occur when peopl inhale water vapour from a man made water osurce eg. Cooling tower which has been poorly maintained

Question 6

legionella pneumophila discovered because

Answer 6

○ Discovered following outbreak at legionnaires conference

Question 7

legionella pneumophila causes

Answer 7

legionaries disease

Question 8

legionaries disease symptoms

Answer 8

§ Pneumonia, often severe and with a significant mortality
§ High fever
§ GI symptoms - nausea, vomiting, diarrhoea
§ Headache, myalgia

Question 9

legionaries disease more likely in

Answer 9

§ More likely in smokers, those with pre existing lung disease or a compromised immune system

Question 10

legionaries disease contracted form

Answer 10

§ May be community acquired or occur in clusters in hospitals or residential care facilities (if hot water system becomes a source)

Question 11

• Legionella longbeachae causes

Answer 11

community acquired pneumonia

Question 12

legionella longebeachae contracted from

Answer 12

potting mix

Question 13

legionella longbeachae risk factors

Answer 13

§ Smoking, pre existing lung disease and comprimised immune system