Bugs

Question 1

Common Pneumonia bugs

Answer 1

Streptococcus pneumoniae
-most common bacterial pneumonia
-rust coloured sputum

Haemophilus influenzae

If HAP - pseudomonas or MRSA

(bronchitis usually viral RSV/flu/rhinovirus)

Question 2

Klebsiella pneumoniae

Answer 2

Redcurrant jelly sputum/haemoptysis
Rare atypical
Cavitating pneumonia esp in upper lobes
More likely in alcoholics, elderly, diabetics, immunosuppressed

Question 3

Legionella

Answer 3

From water sources, notifiable to public health
Atypical pneumonia with arthralgia, fatigue, thin watery sputum, loose stool
Test with urinary antigen

Question 4

Mycoplasma pneumoniae

Answer 4

Atypical with flu-like prodrome, consolidation in one lower lobe
Risk of triggering erythema multiforme (target lesions)

Question 5

Pneumocystic Jirovecii

Answer 5

= PCP
Fungal pneumonia in HIV patients
Dropping sats on exertion

Question 6

Moraxhella catarrhalis

Answer 6

Rare cause of bronchopneumonia in pts with underlying chronic lung disease

Question 7

Giardia

Answer 7

Parasite GI bug
Steatorrhea and bloating, 2-3 weeks
Food/water

Question 8

E coli

Answer 8

O157:H7 strain can cause haemolytic uraemic syndrome
Bloody or non bloody diarrhoea
Other systems can be affected eg urinary/sepsis

Question 9

Bacillus cereus

Answer 9

Watery diarrhoea
Often ingestion of undercooked rice

Question 10

Salmonella

Answer 10

Gastroenteritis with or without dysentery (blood)
Systemic infection/sepsis = typhoid fever
Contaminated meat, eggs, milk

Question 11

Campylobacter

Answer 11

Gastroenteritis with dysentery (blood)
Contaminated poultry
Guillan Barre syndrome assoc

Question 12

Cholera

Answer 12

Rice water diarrhoea
Can cause death by dehydration
Contaminated water, rare in developed world