Haemophilus influenzae
Gm- coccobacillus
can be capsulated (typed a-f) or non-capsulated (non-typable)
upper respiratory coloniser (usually non-capsular)
caps usually case invasive, non-cap common cause of OM
invasive disease usually Hib
Vaccine only targets capsular Hib (95% reduction in notifications post implementation)
6w, 4m, 6m, 1y
can be capsulated (typed a-f) or non-capsulated (non-typable)
upper respiratory coloniser (usually non-capsular)
caps usually case invasive, non-cap common cause of OM
invasive disease usually Hib
- epiglottitis (95% of cases prior to vaccine)
- meningitis (3% fatality with treatment, 30% neurological morbidity)
- septic arthritis
- cellulitis
- pneumonia
- Otitis media
- bronchitis
Vaccine only targets capsular Hib (95% reduction in notifications post implementation)
6w, 4m, 6m, 1y