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. 2007 Mar 7;14(5):593–599. doi: 10.1128/CVI.00344-06

TABLE 1.

Number of children in each group and pneumococcal carriage rates

Groupa Day care attendance Siblings No. of children Pneumococcal carriage rate (%)
1 Yes Yes 33 88
2 No Yes 53 62
3 No No 43 35
4 Yes No 31 77
a

Children are divided into groups on the basis of whether they have siblings and attend day care.