Table 1a. Diagnoses of HIV infection, by year of diagnosis and selected characteristics, 2005–2008—37 states with confidential name-based HIV infection reporting

	2005			2006			2007			2008
	No.	Estimateda		No.	Estimateda		No.	Estimateda		No.	Estimateda
		No.	Rate		No.	Rate		No.	Rate		No.	Rate
Age at diagnosis (yr)
<13	201	215	0.6	164	179	0.5	160	180	0.5	150	182	0.5
13–14	39	42	0.7	43	47	0.8	30	34	0.6	26	31	0.5
15–19	1,184	1,267	8.7	1,321	1,440	9.8	1,523	1,712	11.5	1,559	1,870	12.6
20–24	3,795	4,059	27.9	3,937	4,301	29.6	4,241	4,778	32.9	4,499	5,427	37.2
25–29	4,494	4,814	34.8	4,531	4,953	34.6	4,858	5,478	37.3	4,690	5,646	37.9
30–34	4,904	5,258	38.1	4,323	4,723	34.9	4,312	4,859	36.0	4,216	5,096	37.4
35–39	5,732	6,148	42.6	5,232	5,717	39.3	5,111	5,764	39.4	4,483	5,418	37.1
40–44	5,750	6,162	38.9	5,531	6,051	38.8	5,430	6,125	40.1	4,792	5,788	38.7
45–49	4,176	4,476	28.7	4,042	4,412	27.8	4,339	4,893	30.7	4,146	5,023	31.5
50–54	2,630	2,819	20.3	2,619	2,866	20.1	2,898	3,267	22.3	2,694	3,254	21.7
55–59	1,488	1,594	13.1	1,368	1,493	11.7	1,575	1,775	13.9	1,565	1,883	14.5
60–64	705	756	8.2	660	723	7.7	771	872	8.5	775	935	8.8
≥65	629	675	2.6	579	631	2.4	659	743	2.8	593	716	2.6
Race/ethnicity
American Indian/Alaska Native	170	183	10.3	153	168	9.4	182	204	11.2	181	220	11.9
Asian	314	340	6.1	301	332	5.7	374	430	7.2	362	444	7.2
Black/African American	17,799	19,037	68.2	17,269	18,839	66.8	17,856	20,147	70.5	17,517	21,289	73.7
Hispanic/Latinob	6,282	6,772	26.6	6,168	6,793	25.6	6,417	7,278	26.4	5,897	7,121	25.0
Native Hawaiian/Other Pacific Islander	42	45	34.8	40	43	32.0	35	39	27.8	27	33	22.8
White	10,674	11,428	8.0	10,099	11,010	7.7	10,677	11,962	8.3	9,886	11,778	8.2
Multiple races	446	481	19.7	320	351	13.9	366	418	15.9	318	384	14.1
Transmission category
Male adult or adolescent
Male-to-male sexual contact	14,140	19,174	—	13,880	19,231	—	14,481	21,425	—	13,775	22,469	—
Injection drug use	1,782	3,092	—	1,510	2,784	—	1,411	2,844	—	976	2,539	—
Male-to-male sexual contact and injection drug use	1,006	1,419	—	852	1,255	—	742	1,218	—	600	1,141	—
Heterosexual contactc	2,377	4,064	—	2,317	4,051	—	2,192	4,343	—	2,016	4,496	—
Otherd	6,700	125	—	6,557	130	—	7,701	84	—	8,129	110	—
Subtotal	26,005	27,875	33.7	25,116	27,451	32.8	26,527	29,914	35.3	25,496	30,755	35.9
Female adult or adolescent
Injection drug use	988	1,883	—	820	1,675	—	725	1,634	—	606	1,571	—
Heterosexual contactc	4,376	8,201	—	4,012	8,140	—	3,859	8,657	—	3,321	8,684	—
Otherd	4,157	111	—	4,238	90	—	4,636	93	—	4,615	77	—
Subtotal	9,521	10,196	11.7	9,070	9,905	11.3	9,220	10,385	11.7	8,542	10,332	11.5
Child (<13 yrs at diagnosis)
Perinatal	172	184	—	135	148	—	135	151	—	118	141	—
Othere	29	32	—	29	32	—	25	29	—	32	41	—
Subtotal	201	215	0.6	164	179	0.5	160	180	0.5	150	182	0.5
Totalf	35,727	38,286	18.6	34,350	37,536	18.0	35,907	40,478	19.2	34,188	41,269	19.4

Note. Data include persons with a diagnosis of HIV infection regardless of stage of disease at diagnosis.

See Technical Notes for the list of areas that have had laws or regulations requiring confidential name-based HIV infection reporting since at least January 2005.

^a Estimated numbers resulted from statistical adjustment that accounted for reporting delays and missing risk-factor information, but not for incomplete reporting. Rates are per 100,000 population. Rates not calculated by transmission category because of the lack of denominator data.

^b Hispanics/Latinos can be of any race.

^c Heterosexual contact with a person known to have, or to be at high risk for, HIV infection.

^d Includes hemophilia, blood transfusion, perinatal exposure, and risk factor not reported or not identified.

^e Includes hemophilia, blood transfusion, and risk factor not reported or not identified.

^f Because column totals for estimated numbers were calculated independently of the values for the subpopulations, the values in each column may not sum to the column total.