H2 strain attenuated live hepatitis A vaccines: Protective efficacy in a hepatitis A outbreak

Table 5 Incidence rates of the trial population in the 14 villages invested

Villages	Vaccine group			Control group
	No. of Subjects	No. of HA cases	Incidence rate	No. of Subjects	No. of HA cases	Incidence rate
Dongni	17	0	0.00	29	1	3.45
Dongyi	32	0	0.00	34	3	8.82
Fuzhuang	0	0	0.00	9	1	11.11
Gengzhuang	5	0	0.00	10	3	30.00
Gucheng	48	0	0.00	62	3	4.84
Haitun	19	0	0.00	20	1	5.00
Houxong	32	1	3.13	26	2	7.69
Lihui	35	0	0.00	27	1	3.70
Liqiao	48	0	0.00	23	2	8.70
Liuhui	16	0	0.00	26	1	3.85
Liunan	35	0	0.00	40	2	5.00
Mengzhuang	4	0	0.00	49	3	6.12
Qiansong	40	0	0.00	42	1	2.38
Dainan	25	0	0.00	22	1	4.55
Total	356	1	0.28	422	25	5.92