Table 1a. Reported number and rate per 100,000 population of cases of acute, symptomatic, viral hepatitis, by type and year, United States, 1966-2008

Year	No.	Rate	No.	Rate	No.	Rate
	Hepatitis A		Hepatitis B		Hepatitis C
1966	32859	16.8	1497	0.8	—†	—†
1967	38909	19.7	2458	1.3	—†	—†
1968	45893	23.0	4829	2.5	—†	—†
1969	48416	24.0	5909	3.0	—†	—†
1970	56797	27.9	8310	4.1	—†	—†
1971	59606	28.9	9556	4.7	—†	—†
1972	54074	26.0	9402	4.5	—†	—†
1973	50749	24.2	8451	4.0	—†	—†
1974	40358	19.5	10631	5.2	—†	—†
1975	35855	16.8	13121	6.3	—†	—†
1976	33288	15.5	14973	7.1	—†	—†
1977	31153	14.4	16831	7.8	—†	—†
1978	29500	13.5	15016	6.9	—†	—†
1979	30407	13.8	15452	7.0	—†	—†
1980	29087	12.8	19015	8.4	—†	—†
1981	25802	11.3	21152	9.2	—†	—†
1982	23403	10.1	22177	9.6	2,629§	1.1§
1983	21532	9.2	24318	10.4	3,470§	1.5§
1984	22040	9.3	26115	11.1	3,871§	1.6§
1985¶	23257	10.0	26654	11.5	4,192§	1.8§
1986¶	23430	10.0	26107	11.2	3,634§	1.6§
1987	25280	10.4	25916	10.7	2,999§	1.2§
1988	28507	11.6	23177	9.4	2,619§	1.1§
1989	35821	14.4	23419	9.4	2,529§	1.0§
1990	31441	12.6	21102	8.5	2,553§	1.0§
1991	24378	9.7	18003	7.1	3,582§	1.4§
1992	23112	9.1	16126	6.3	6010	2.4
1993	24238	9.4	13361	5.2	4786	1.9
1994	26796	10.3	12517	4.8	4470	1.8
1995	31582	12.0	10805	4.1	4576	1.7
1996	31032	11.7	10637	4.0	3716	1.4
1997	30021	11.2	10416	3.9	3816	1.4
1998	23229	8.6	10258	3.8	3518	1.3
1999	17047	6.3	7694	2.8	3111	1.1
2000	13397	4.8	8036	2.9	3197	1.1
2001	10615	3.7	7844	2.8	1,640**	0.7**
2002	8795	3.1	8064	2.8	1,223 ††	0.5 ††
2003	7653	2.6	7526	2.6	891††	0.3 ††
2004	5683	1.9	6212	2.1	758	0.3
2005	4488	1.5	5494	1.8	694	0.2
2006	3579	1.2	4,713§§	1.6§§	802	0.3
2007¶¶	2979	1.0	4519	1.5	849	0.3
2008¶¶	2585	0.9	4,033***	1.3***	878***	0.3

Source: National Notifiable Diseases Surveillance System, 1966-2008.

† Non-A, non-B hepatitis became a reportable disease in 1982.
§Numbers and rates shown for hepatitis C/ Non-A, non-B hepatitis were unreliable, reflecting the erroneous reporting of chronically infected persons as acute cases that occurred when testing for antibody to hepatitis C virus (anti-HCV) first became widely available.
¶ Excludes cases from New York City; data not available for 1985 – 1986. **Excludes cases from New Jersey and Missouri.
†† Excludes cases from Missouri.
§§ Excludes cases from Arizona.
¶¶ Excludes cases from the District of Columbia;
data not available for 2007 – 2008.
***Excludes cases from Delaware.

In 2008, a total of 2,585 acute, symptomatic cases of hepatitis A were reported nationwide. The overall incidence rate of 0.9 cases per 100,000 population was the lowest ever recorded.