Table 4.

Results of serum IgM anti-HAV in 138 1-15 year old HA cases found in the HA outbreak in Fucheng, 1998

Days between HA attack and interview	No. of tested	Age (mean ± SD)	Positive
			No	%	S/CO (mean ± SD)
1-29	12	6.33 ± 2.57	12	100.00	10.33 ± 1.22
30-59	46	8.11 ± 2.39	44	95.65	7.12 ± 2.50
60-89	61	7.36 ± 2.52	49	80.33	5.09 ± 2.71
90-119	8	7.13 ± 1.25	7	87.50	2.80 ± 2.24
Total	127	7.52 ± 2.45	112	88.19	6.31 ± 3.04