Parvobacteria

• Gram negative coccabacilli
• Only grow on enriched media

Haemophilus influenzae

About

• Grows on chocolate agar (heat treated blood)
• Non capsulated form is a normal commensal in the respiratory tract.
• Capsulated (type b) only in a few, carriers within the population.

Disease

• Epiglottits
• Meningitis in the under 5s
• make chronic lung conditions worse.

Treatment'

• Often resistant to penicillins
• Cefotaxime or ceftriaxone.
• Hib vaccine has cause reductions.

Legionella pneumophila

About

• Cause of legionaire's disease, named due to the first outbreak in a Legion Conference.
• Gram negative
• Obligate aerobe
• Fastidious growth requirements

Disease

• Pneumonia
• Fever with no respiratory symptoms
• Bodywide spread

Treatment

• Erythromicin, with rifamricin in bad cases.
• Tetracycline and fluoroquinolones also work.

Brucella

• Types like B. abortus, B. canis, etc
• Get it from animals
• Causes fever and systemic upset
• Avoid milk and animals products
• 6 weeks with a tetracycline and an aminoglycoside

Bordetella

• Common one is B. pertussis
• Causes whooping cough
• Mainly affects young children
• Treat with erythromycin