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

Table 3 Vaccination status and serotypes detected in three consecutive nasopharyngeal samples from 25 healthy children

Children age (months)^a	PCV7^b doses	Winter 2004	Spring 2005	Winter 2005
5	0	19A	19A	negative
6	0	23B	negative	23B
6	0	NT^c	21	NT
7	0	negative	negative	negative
7	0	6B + 21	NT	negative
10	0	19F + 21	10A	19A
11	0	16F	19A	negative
15	0	23B	15B	19A
16	0	6B + 11A + 20	6B + 16F	14
17	0	negative	23B	14
4	1	19A	35	14 + 19A + 35
5	1	11A + 15B	16F + 19A	35
6	1	negative	21	19A
7	1	21	16F + 19F	19A
10	1	NT	NT	35
10	1	19A	negative	19A
9	2	6B + 19F + 21	10A + 19F	19A
16	2	16F	negative	negative
7	3	21	16F + 19A	14
9	3	6B + 21	19F	19A
10	3	6B + 21	14	negative
12	3	negative	16F + 20	19A
12	3	16F + 35F	15B	NT
15	3	NT	11A + 19A	negative
17	3	16F + 20 + 23B	19A	10A

^a Children age (months): when enrolling the study
^b PCV7: 7-valent pneumococcal conjugate vaccine
^c NT, non typeable but optochin, bile esculin and autolysin lytA gene positive

ISSN: 1471-2334