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

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

	N^º 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