Table 2

		1998-2000	2001-2003	2004-2006	2007-2009
Incidence rate per 105 P-Y(IC à 95%)	HIV	583	782	284	201
	HBV	482	583	903	1429
	HVC	4229	2238	3099	6526
Estimated residual risk for the period per1/n donation (IC à 95%)	HIV	2857	2128	5882	8333
	HBV	1351	1123	724	456
	HCV	131	247	178	84

Table 2: HIV, HBV and HCV incidence rates and assessment of residual risk for the four periods in NBTC.