Table 2a. AIDS diagnoses, by year of diagnosis and selected characteristics, 2005–2008 and cumulative—United States

	2005			2006			2007			2008			Cumulative^b
	No.	Estimated^a		No.	Estimated^a		No.	Estimated^a		No.	Estimated^a		Cumulative^b
	No.	No.	Rate	No.	No.	Rate	No.	No.	Rate	No.	No.	Rate	No.	Est. No.^a
Age at diagnosis (yr)
<13	52	55	0.1	37	40	0.1	27	30	0.1	31	41	0.1	9,270	9,349
13–14	69	73	0.9	69	75	0.9	66	73	0.9	40	48	0.6	1,179	1,220
15–19	397	420	2.0	367	398	1.9	395	447	2.1	397	497	2.3	6,407	6,685
20–24	1,627	1,719	8.2	1,523	1,647	7.9	1,709	1,935	9.2	1,563	1,976	9.4	39,498	40,735
25–29	2,998	3,166	15.9	3,118	3,368	16.4	3,021	3,423	16.3	2,856	3,616	16.9	123,139	125,755
30–34	4,535	4,789	24.0	3,989	4,319	22.1	3,719	4,214	21.7	3,543	4,461	22.8	205,658	209,554
35–39	6,242	6,591	31.5	5,812	6,295	29.9	5,201	5,899	27.9	4,525	5,719	27.2	224,034	229,111
40–44	7,132	7,537	33.1	6,674	7,225	32.2	6,050	6,857	31.2	5,276	6,683	31.1	182,192	187,421
45–49	5,535	5,847	26.0	5,168	5,599	24.6	5,187	5,882	25.7	4,639	5,920	25.9	117,002	121,111
50–54	3,382	3,574	17.9	3,369	3,645	17.8	3,263	3,680	17.5	3,102	3,946	18.4	66,034	68,560
55–59	1,810	1,911	11.0	1,877	2,028	11.1	1,837	2,075	11.4	1,782	2,242	12.1	35,633	36,987
60–64	828	873	6.7	891	964	7.2	888	999	6.9	912	1,140	7.5	18,999	19,669
≥65	696	734	2.0	778	839	2.3	725	818	2.2	680	862	2.2	16,412	16,972
Race/ethnicity
American Indian/Alaska Native	166	174	7.8	144	156	6.9	141	156	6.8	163	199	8.5	3,629	3,741
Asian^c	374	398	3.3	402	443	3.5	417	488	3.8	401	525	4.0	7,891	8,253
Black/African American	17,260	18,262	50.6	16,257	17,594	48.3	15,657	17,718	48.1	14,474	18,328	49.3	439,415	452,916
Hispanic/Latino^d	6,692	7,066	16.6	6,494	7,044	16.0	6,167	7,023	15.4	5,473	7,043	15.0	174,819	180,061
Native Hawaiian/Other Pacific Islander	47	50	12.1	50	54	12.9	51	58	13.6	41	51	11.8	799	830
White	10,333	10,886	5.5	9,895	10,688	5.4	9,229	10,413	5.2	8,441	10,570	5.3	411,756	419,905
Multiple races	431	455	11.3	430	463	11.1	426	477	11.1	353	435	9.8	6,784	7,054
Transmission category
Male adult or adolescent
Male-to-male sexual contact	13,225	16,824	—	12,693	16,696	—	12,157	16,992	—	10,946	17,758	—	458,731	513,138
Injection drug use	3,114	4,350	—	2,672	3,921	—	2,326	3,708	—	1,869	3,555	—	157,879	183,052
Male-to-male sexual contact and injection drug use	1,707	2,085	—	1,480	1,889	—	1,271	1,759	—	1,091	1,704	—	67,811	74,155
Heterosexual contact^e	2,744	3,920	—	2,773	4,005	—	2,472	3,961	—	2,401	4,301	—	53,124	68,546
Other^f	5,177	256	—	5,050	231	—	5,214	199	—	5,371	225	—	93,595	13,083
Subtotal	25,967	27,436	23.1	24,668	26,741	22.2	23,440	26,619	21.9	21,678	27,543	22.4	831,140	851,974
Female adult or adolescent
Injection drug use	1,803	2,724	—	1,509	2,406	—	1,387	2,384	—	1,099	2,256	—	68,987	84,339
Heterosexual contact^e	4,452	6,856	—	4,442	7,029	—	4,141	7,069	—	3,523	7,112	—	91,341	120,039
Other^f	3,029	219	—	3,016	226	—	3,092	230	—	3,015	199	—	44,718	7,426
Subtotal	9,284	9,799	7.9	8,967	9,661	7.7	8,620	9,683	7.6	7,637	9,567	7.5	205,046	211,804
Child (<13 yrs at diagnosis)
Perinatal	47	50	—	34	37	—	25	28	—	27	34	—	8,504	8,577
Other^g	5	5	—	3	3	—	2	2	—	4	6	—	766	773
Subtotal	52	55	0.1	37	40	0.1	27	30	0.1	31	41	0.1	9,270	9,349
Region of residence
Northeast	8,756	9,323	17.1	8,445	9,168	16.8	7,881	9,011	16.5	6,233	8,386	15.3	320,394	328,748
Midwest	4,185	4,427	6.7	3,818	4,126	6.2	3,539	3,993	6.0	3,395	4,251	6.4	108,178	111,137
South	16,406	17,204	16.0	15,623	16,711	15.4	15,164	16,781	15.2	14,648	17,471	15.6	404,732	414,914
West	5,956	6,336	9.3	5,786	6,436	9.3	5,504	6,548	9.4	5,070	7,042	9.9	212,153	218,331
Total^h	35,303	37,290	12.6	33,672	36,442	12.2	32,088	36,333	12.1	29,346	37,151	12.2	1,045,457ⁱ	1,073,128

^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 From the beginning of the epidemic through 2008.

^c Includes Asian/Pacific Islander legacy cases (see Technical Notes).

^d Hispanics/Latinos can be of any race.

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

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

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

^h 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.

ⁱ Includes persons of unknown race/ethnicity.