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Table 1 Distribution of Streptococcus pneumoniae specimens by age group and year collected

From: Serotype distribution and antibiotic resistance of Streptococcus pneumoniae isolates from 17 Chinese cities from 2011 to 2016

Specimen type Number % Age groups Years
    ≤ 2 years > 2 and ≤ 5 years > 5 and ≤ 18 years > 18 and ≤ 65 years > 65 years 2011 2012 2013 2016
Sputum 644 73.1 121 33 26 259 205 34 210 166 234
Blood 56 6.4 3 3 3 35 12 3 18 17 18
Broncho-alveolar lavage 56 6.4    1 37 18   13 17 26
Pharyngeal swabs 22 2.5 3 6 4 8 1 3 8 4 7
Cerebrospinal fluid 13 1.5    1 9 3   2 4 7
Eye secretion 10 1.1   2 2 5 1 1 1 4 4
Secretion 9 1.0 1   1 5 2   5   4
Pus 8 0.9 1    6 1   4 4  
Nasal swabs 6 0.7 2    4    3 3  
Wound swab 6 0.7     5 1   2 3 1
Pleural fluid 6 0.7     5 1   2   4
Tissue 6 0.7     2 4    5 1
Sinus swab 4 0.5    2 2      4
Tracheal 4 0.5     3 1    4  
Middle ear fluid 3 0.3    1 1 1   1 2  
Abdominal fluid 3 0.3     3     1 2
Bile 2 0.2      2   1   1
Urine 2 0.2     2     1 1
Bone marrow 1 0.1     1     1  
Vaginal swab 1 0.1     1     1  
Not specified 19 2.2   1 2 15 1     19