Pathogen and Associated condition

Question 1

Respiratory syncytial virus

Answer 1

Bronchiolitis

Question 2

Parainfluenza virus

Answer 2

Croup

Question 3

Rhinovirus

Answer 3

Common cold

Question 4

Influenza virus

Answer 4

Flu

Question 5

Streptococcus pneumoniae

Answer 5

The most common cause of community-acquired pneumonia

Question 6

Haemophilus influenzae

Answer 6

Community-acquired pneumonia
Most common cause of bronchiectasis exacerbations
Acute epiglottitis

Question 7

Staphylococcus aureus

Answer 7

Pneumonia, particularly following influenza

Question 8

Mycoplasma pneumoniae

Answer 8

Atypical pneumonia

Flu-like symptoms classically precede a dry cough. Complications include haemolytic anaemia and erythema multiforme

Question 9

Legionella pneumophilia

Answer 9

Atypical pneumonia

Classically spread by air-conditioning systems, causes dry cough. Lymphopenia, deranged liver function tests and hyponatraemia may be seen

Question 10

Pneumocystis jiroveci

Answer 10

Common cause of pneumonia in HIV patients. Typically patients have few chest signs and develop exertional dyspnoea

Question 11

Mycobacterium tuberculosis

Answer 11

Causes tuberculosis. A wide range of presentations from asymptomatic to disseminated disease are possible. Cough, night sweats and weight loss may be seen