Table 2. Laboratory-confirmed hepatitis A cases and number of cases in outbreaks from 2004–2007.

	Total	Confirmed by lab		Outbreaks
	Cases	Cases	%	No.	Cases	%
2004	93 587	46 221	49.4	26	2291	2.4
2005	73 349	34 196	46.6	33	2061	2.8
2006	68 667	35 735	52	43	1826	2.7
2007	77 135	45 786	59.4	52	3019	3.9
Total	312 738	161 938	51.8	154	9197	2.9

Sources: NNDRS (Total and Laboratory-Confirmed cases); EERS (Outbreaks).