Table 3. Distribution of ILI cases, seasonal and Influenza A(H1N1)pdm09 positives by age groups in urban population from July 2009–December 2010.

Age in yrs	# Tested	Influenza +ve		Seasonal Influenza +ve		Influenza A(H1N1)pdm09 +ve		Odds ratio (Prevalence Ratio)	95% CI	P value(Pearson's Chi squared test)
		n	%	n	%	n	%
0–5	81	23	28.0	7	8.6	16	19.8	2.5	0.87–7.1	0.09
>5–18	266	112	42.0	34	12.8	78	29.3	2.5	1.2–5.0	0.009
>18– 25	108	42	39.0	12	11.1	30	27.8	2.7	1.13–6.5	0.02
>25–35	194	66	34.0	23	11.8	43	22.2	2.0	0.95–4.3	0.06
>35	214	48	23.0	25	11.7	23	10.7	Baseline
Total	863	291	34.0	101	11.7	190	22.0