Factors affecting the immunogenicity of influenza vaccines in human

BMC Infectious Diseases

Table 3 The Seroconversion Rate and Response Rate among Different Groups (n = 557)

Variable	Category	A/H1N1			A/H3N2			B/Victoria			B/Yamagata			Response Status
Variable	Category	The seroconv-ersion rate	χ²	P	The seroconv-ersion rate	χ²	P	The seroconv-ersion rate	χ²	P	The seroconv-ersion rate	χ²	P	The Response rate	χ²	P
Age Group	≤ 5	51.1%	13.27	0.004	66.0%	4.03	0.26	53.2%	11.27	0.01	42.9%	8.50	0.04	60.0%	8.68	0.03
	6–17	72.2%			63.3%			71.4%			57.1%			88.2%
	18–64	63.7%			56.7%			62.8%			67.6%			70.8%
	≥ 65	49.4%			53.3%			48.7%			30.4%			53.3%
Region	Yunnan	61.1%	29.40	< 0.001	80.7%	85.21	< 0.001	62.3%	17.48	< 0.001	-	-	-	71.0%	2.57	0.28
	Xinjiang	32.3%			86.5%			37.9			-			64.9%
	Shaanxi	63.5%			38.3%			59.5%			52.3%			59.2%
Frequency of Colds	≤ 1	63.5%	3.62	0.31	9.1%	34.34	< 0.001	51.9%	6.23	0.10	50.0%	2.88	0.41	50.0%	5.66	0.13
	2–3	63.3%			50.7%			64.6%			59.1%			71.7%
	4–6	54.4%			77.5%			51.9%			30.0%			54.5%
	>6	75.0%			55.6%			60.0%			50.0%			60.0%
Vaccination History	No	64.3%	27.23	< 0.001	58.1%	0.13	0.72	64.8%	28.29	< 0.001	56.9%	1.72	0.19	72.7%	14.62	< 0.001
	Yes	40.8%			60.0%			40.8%			41.9%			43.1%
Chronic Diseases	No	60.3%	1.10	0.29	53.9%	0.07	0.79	63.6%	11.48	0.001	64.1%	5.19	0.02	67.8%	1.18	0.28
	Yes	54.7%			55.7%			45.3%			33.3%			58.1%

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