Table 1.

Demographic indicators of the study population.

	Antananarivo	Antsalova	Mahajanga	Midongy-atsimo	Toliara	TOTAL
	n = 299	n = 300	n = 298	n = 299	n = 300	N = 1496
Gender
Female	49%	58%	53%	54%	55%	54%
Age group distribution (n)
6–11 mo	99	100	100	99	101	499
36–59 mo	99	100	98	100	94	491
5–14 yrs	101	100	100	100	105	506
Median age (in month)
6–11 mo	11	11	9	10	10	10
36–59 mo	51	48	44	48	54	48
5–14 yrs	124	108	130	120	127	121
Vaccination history of OPV 3 (% documented by date in vaccination card)	19%	0%	5%	8%	1%	7%
Chronic malnutrition (%)	34%	12%	15%	39%	31%	26%

OPV3- third dose of oral poliovirus vaccine.