Skip to main content

Table 1 Pathogens detected and methods used for diagnosis in 700 adults with community-acquired pneumonia

From: Etiology of community-acquired pneumonia in a population-based study: Link between etiology and patients characteristics, process-of-care, clinical evolution and outcomes

Pathogens

 

Diagnostic method performed*

 

Inpatients (N = 276)

Outpatients (N = 424)

Urinary Antigen (N = 678)

Sputum (N = 222 )

Blood Culture (N = 221 )

Serologic Test (N = 663 )

Any pathogen identified

196 (71)

194 (45.7)

    

Conventional bacteria

136 (69.4)

43 (22.2)

    

Streptococcus pneumoniae

127 (64.8)

43 (22.2)

155 (22.9)

8 (3.6)

24 (10.9)

 

Others bacteria

9 (4.6)

0 (0)

 

4 (1.8)

5 (2.3)

 

Atypical pathogen

60 (30.6)

130 (67)

    

Coxiella burnetii

15 (7.7)

57 (29.4)

   

72 (10.9)

Mycoplasma pneumoniae

22 (11.2)

40 (20.6)

   

62 (9.4)

Chlamydia pneumoniae

11 (5.6)

26 (13.4)

   

37 (5.6)

Chlamydia psittaci

1 (0.5)

1 (0.5)

   

2 (0.3)

Legionella pneumophila

11 (5.6)

6 (3.1)

17 (3.5)

   

Virus

21 (10.7)

35 (18)

    

Influenza virus

6 (3.1)

18 (9.3)

   

24 (3.6)

Parainfluenza virus

15 (7.7)

17 (8.8)

   

32 (4.8)

Total, mixed infection

21 (10.7)

14 (7.2)

    
  1. Data are presented as numbers (percentage) unless otherwise stated. Values for mixed infections are included in those for each of the infecting organism.
  2. Others bacteria included Escherichia coli 4 cases, Stafhylococcus aureus 2 cases, Enterococcus faecalis 1 case, Pseudomonas aeruginosa 1 case, Morganella morganii 1 case.
  3. *Data are presented as numbers of patients with positive results. % = positive results/number of test performed
  4. P value <0.05, between inpatients and outpatients.