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Table 1 Distribution of samples by sex and age group

From: Serological survey on immunity status against polioviruses in children and adolescents living in a border region, Apulia (Southern Italy)

  Male Female Total
Age group N % N % N %
< 1 year 44 11,9 29 8,7 73 10,4
1 year 23 6,2 24 7,2 47 6,7
2 years 25 6,8 18 5,4 43 6,1
3–5 years 81 21,9 77 23,0 158 22,4
6–10 years 116 31,4 117 34,9 233 33,1
11–12 years 39 10,6 31 9,3 70 9,9
13–15 years 41 11,1 39 11,6 80 11,4
Total 369   335   704