The prevalence of respiratory pathogens in adults with community-acquired pneumonia in an outpatient cohort

Figures & data

Figure 4 Monthly distribution of viral pathogens by numbers of positive specimens.

Table 1 The prevalence of the respiratory pathogens and the analysis grouped by age

	Pathogens	Subjects (n=253)	<65 years (n=191)	≥65 years (n=41)
Virus	IFA	26 (11.1%)	20 (10.5%)	6 (14.6%)
	IFB	9 (3.6%)	6 (3.1%)	3 (7.3%)
	PIVs	8 (3.2%)	6 (3.1%)	2 (4.9%)
	RhV	6 (2.4%)	4 (2.1%)	2 (4.9%)
	EV	4 (1.6%)	4 (2.1%)	0
	hMPV*	4 (1.6%)	1 (0.5%)	3 (7.3%)
	RSV	3 (1.2%)	3 (1.6%)	0
	ADV	1 (0.4%)	1 (0.5%)	0
	HCoV	1 (0.4%)	0	1 (2.4%)
	All	62 (24.5%)	45 (23.6%)	17 (41.5%)
Atypical pathogens	Mycoplasm pneumoniae*	44 (17.4%)	43 (22.5%)	1 (2.4%)
	Chlamydia pneumoniae*	1 (0.4%)	1 (0.5%)	0
	Legionella spp	0	0	0
	All	45 (17.8%)	44 (23.0%)	1
Bacteria	Streptococcus Pneumoniae	21 (8.3%)	17 (8.9%)	4 (9.8%)
	Haemophilus Influenzae	15 (6.2%)	13 (6.8%)	2 (4.9%)
	Klebsiella Pneumoniae	6 (2.4%)	6 (3.1%)	0
	Streptococcus Pyogenes	1 (0.4%)	1 (0.5%)	0
	Moraxella Catarrhalis	1 (0.4%)	1 (0.5%)	0
	Pseudomonas Aeruginosa	1 (0.4%)	1 (0.5%)	0
	Staphylococcus Aureus	0	0	0
	Escherichia Coli	0	0	0
	All	45	39	6

Note: *P<0.05.

Figure 1 Age distribution of respiratory pathogens profiles.

Table 2 The influence of specimen type in the positive specimens for the different pathogens

pathogens	Number of patients
	Sputum(n=109)	Throat swab (n=124)
IFA	14 (12.8%)	12 (9.7%)
IFB	6 (5.5%)	3 (2.4%)
PIVs	6 (5.5%)	2 (1.6%)
RhV*	6 (5.5%)	0
EV	2 (1.8%)	2 (1.6%)
hMPV	3 (2.8%)	1 (0.8%)
RSV	2 (1.8%)	1 (0.8%)
ADV	1 (0.9%)	0
HCoV	1 (0.9%)	0
Mycoplasm pneumoniae*	40 (36.7%)	4 (3.2%)
Chlamydia pneumoniae	1 (0.9%)	0
Legionella spp	0	0

Note: *P<0.05.

Figure 2 The polymicrobial infection of the pathogens by numbers of positive specimens. (A) mixed IFA and bacterial or atypical pathogens. (B) mixed RhV and bacterial or atypical pathogens. (C) other virus mixed with single bacterial or atypical pathogens. (D) mixed Mycoplasm pneumoniae and bacterial pathogens. (E) multiple bacterial pathogens. (F) multiple viral pathogen.

Figure 3 Monthly distribution of Mycoplasma pneumoniae by numbers of positive specimens.

Figure 5 Seasonal distribution of viral and atypical pathogens by numbers of positive specimens.