Table 1: List of sera studied in rural and urban pediatric population of the state of Querétaro (Mexico), by location, gender and age.

Nº Sera Total
Male population
Rural Male Population 148
Urban Male Population 117
265
Female population
Rural Female Population 148
Urban Female Population 127
275
Total 540
Population of 6 to 8-years-old
Rural Male Population 60
Urban Male Population 52
Rural Female Population 67
Urban Female Population 60
239
Population of 9 to 11-years-old
Rural Male Population 64
Urban Male Population 54
Rural Female Population 58
Urban Female Population 56
232
Population of 12 to 17-years-old
Rural Male Population 24
Urban Male Population 11
Rural Female Population 23
Urban Female Population 11
69
Total 540