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Table 2 Streptococcus pneumoniae serotype distribution in nasopharyngeal samples of carriers collected on three distinct dates

From: Dynamics of pneumococcal nasopharyngeal carriage in healthy children attending a day care center in northern Spain. influence of detection techniques on the results

  Time of sampling Single or multiple carriage per sample Total samples with this serotype Serotyping method Number of children colonized with this serotype
Serotypea Winter 2004 Spring 2005 Winter 2005 Single With another one With another two With another three   Quellungb Pneumotest Latexc Multiplex PCR  
4    1 1     1 1 1 1 1
5 1      1   1 0 0 1 1
6A   2    2    2 2 2 2 2
6B 13 2   2 9 4   15 15 14 15 14
6C 1       1 1 1 1 1 1
9V   2   1 1    2 2 2 2 2
9N   1     1   1 1 1 1 1
10A 3 8 1 8 3 1   12 11 12 12 11
10B 1    1     1 1 1 1 1
11A 12 2   2 8 3 1 14 11 11 14 13
13 1 1     2   2 2 2 2 2
14   6 6 8 3 1   12 6 6 12 12
15B 8 10 3 14 5 2   21 20 20 21 20
16F 14 9   8 11 3 1 23 17 17 23 21
19A 9 12 20 30 9 2   41 41 41 41 36
19F 2 4   2 3 1   6 6 6 6 5
20 6 9 1 4 9 3   16 6 6 16 16
21 7 6   9 3 1   13 13 13 13 13
22F 2 1    2 1   3 1 1 3 3
23B 6 3 1 7   2 1 10 10 10 10 9
35F 1 1 6 5 2 1   8 8 8 8 7
Total pneumococci serotyped 87 79 39 102 70 29 4 205 175 175 205 191
Non typeable isolates 7 4 2 13     13 13 13 13 11
Total pneumococci detected 94 83 41 115 70 29 4 218    218  
  1. a Serotype: in bold, serotypes included in the seven-valent pneumococcal conjugate vaccine
  2. b Quellung: serotype 6C-specific antiserum, factor 6 d, was not available at the moment of the study and serotype 6C was verified by using factor antiserum 6b
  3. c Pneumotest-Latex kit: the kit used did not allow the identification at the serotype level, being identifications done at the serogroup level