Table 2.

 Aetiology of community‐acquired pneumonia in the community (%). (Blank boxes indicate organism not sought)

Reference	n	SP	HI	LP	MC	SA	GNEB	MP	CS	CPne	CPsi	CB	Virus	Influenza
Almirall et al. [100]	105	12.4	0	2.9		0	0	7.6	15.2	15.2	0	0	11.4	0
Almirall et al. [31]	232	11.6	0.4	2.2		0	0.4	3.9		9.5	0	2.2	14.2	8. 2
Beovic et al. [101]	109	13.8	3.6	1.8	2.7	0.9		24.8		21.1	0.9
Berntsson et al. [102]	54	9.3	11.1	0		–	–	37.0	3.7	–	3.7	0	13.0	7.4
Blanquer et al. [103]	48	12.5	0	12.5		0	0	12.5	–	–	0	0	20.8	14.6
BTS et al. [104]	67	6.0	0	0	0	0	0	3.0					28.0	10.0
Dulake and Selkon [105]	36	19.0	14.0			0	0	2.0				0	2	2
Foy et al. [106]	2256	12.0						20.0					25.0	8.0
Holm et al. [95]	48	15	4	0	0	2	0	8		0			13	4
Jokinen et al. [42]	304	41	4		3			10	12	10	1		9	2
Marrie et al. [49]	149							22.8		10.7		2.7		2.7
Marrie et al. [107]	507	5.9	4.9					15		12
Melbye et al. [108]	36	11.1	0	0		–	–	13.9		8.3	0	–	33.3	19.4
Michetti et al. [52]	119	0	0	3.4		0	0	32.8	16.0	6.7	9.2	0	5.9	3.4
Miyashita et al. [109]	106	12.3	4.7		1.9	0.9		27.4					1.9
Wattanathum et al. [25]	98	13.3	1	8.2				29.6		36.7
Woodhead et al. [110]	236	36.0	10.0	0.5	0	1.0	1.0	1.0	1.0			0	13.0	8.0
Range		0–36	0–14	0–13	0–3	0–1	0–1	1–33	1–16	7–37	0–9	0–3	2–33	0–19

SP, Streptococcus pneumoniae; HI, Haemophilus influenzae; LP, Legionella pneumophila; MC, Moraxella catarrhalis; SA, Staphylococcus aureus; GNEB, Gram‐negative enteric bacilli; MP, Mycoplasma pneumoniae; CS, Chlamydia species (all); CPne, Chlamydophila pneumoniae; CPsi, Chlamydophila psittaci; CB, Coxiella burnetii.