摘要：Invasive pneumococcal disease (IPD) is caused by thebacterium Streptococcus pneumoniae and is a major causeof illness in children and adults worldwide. The bacteriumis transmitted between people via respiratory droplets.Many people carry S. pneumoniae harmlessly in theirthroats but the bacterium occasionally spreads from theupper respiratory tract to other parts of the respiratory tractto cause non-invasive disease (including otitis media) orenters the bloodstream tocause invasive disease (includingpneumonia, meningitis or septicaemia).1In Australia, onlyinvasive disease is notifiable under public health law
