HIV incidence estimate combining HIV/AIDS surveillance, testing history information and HIV test to identify recent infections in Lazio, Italy

Table 1 New HIV diagnoses by type of diagnosis and information on a previous negative HIV test; Lazio, Italy, 2004-2008

	Ever Tested HIV Negative?
	Yes	No	Unknown	Total
*AIDS within 6 months of HIV diagnosis**	19	65	100	184
*AIDS diagnosis at HIV diagnosis**	102	324	276	702
HIV diagnosis, non-recent infection	278	194	40	512
HIV diagnosis, recent infection	190	55	45	290
HIV diagnosis, no test for recent infection	201	177	1,567	1,945
Total	790	815	2,028	3,633

*Diagnoses at the AIDS stage were considered as non-recent regardless of avidity index results. AIDS definition used: clinical AIDS or CD4 count < 200 cells/μL

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