Features of other causal organisms of CAP
| Chlamydia trachomatis | Most common in infants and young children. History of sticky eye in neonatal period is common finding |
| Bordetella pertussis | Despite primary pertussis vaccination, this disease has been affecting an increasing number of very young children, probably due to older children and young adults who have not been immunised |
| Staphylococcal infection | Rare in developed countries, most commonly found in infants |
| Tuberculosis (TB) | A resurgence of TB has been noted. More common in ethnic minorities and people infected with HIV. Increasingly common in the UK indigenous population |