Haemophilus influenzae (Hi) is an important bacterial pathogen in children, causing a variety of respiratory infections and lifethreatening diseases such as meningitis, epiglottitis, pneumonia and septicaemia. Occasionally, Hi can also cause sporadic infections such as septic arthritis (SA). Before the advent of Hi type b (Hib) vaccination, paediatric invasive Hi disease was caused mostly by Hi...