Return on investment in needle and syringe programs in Australia: report

Table 3.4.5 Estimated number of HIV/AIDS cases prevented through NSP introduction in 1988 by disease stage and diagnosis category

Page last updated: 2002

Note: Proportions diagnosed are 80% for CD4>500, 90% for CD4<500, and 100% for AIDS.

YearHIV/AIDS1CD4 >500 (diagnosed)CD4 >500 (undiagnosed)CD4 <500 (diagnosed)CD4 <500 (undiagnosed)AIDS
1981
0
0
0
0
0
0
1982
0
0
0
0
0
0
1983
0
0
0
0
0
0
1984
0
0
0
0
0
0
1985
0
0
0
0
0
0
1986
0
0
0
0
0
0
1987
0
0
0
0
0
0
1988
59
47
12
0
0
0
1989
183
142
36
4
0
1
1990
401
303
76
16
2
4
1991
742
544
136
47
5
10
1992
1250
887
222
107
12
23
1993
1988
1369
342
210
23
44
1994
3033
2033
508
373
41
78
1995
4503
2950
738
616
68
131
1996
6573
4213
1053
1004
112
192
1997
9445
5935
1484
1573
175
278
1998
13376
8255
2064
2399
267
393
1999
18674
11320
2830
3585
398
540
2000
25673
15277
3819
5266
585
725
2001
25186
12681
3170
7551
839
946
2002
24650
9833
2458
10027
1114
1219
2003
24056
7142
1785
12247
1361
1521
2004
23400
4896
1224
13901
1545
1834
2005
22684
3230
807
14865
1652
2130
2006
21908
2105
526
15196
1688
2392
2007
21077
1363
341
15094
1677
2602
2008
20211
876
219
14733
1637
2746
2009
19316
560
140
14210
1579
2828
2010
18409
356
89
13603
1511
2849
2011
17502
225
56
12958
1440
2824
2012
16600
141
35
12296
1366
2762
2013
15715
88
22
11638
1293
2674
2014
14854
55
14
10996
1222
2569
2015
14023
34
9
10375
1153
2453
2016
13225
21
5
9781
1087
2331
2017
12462
13
3
9214
1024
2208
2018
11737
8
2
8677
964
2086
2019
11046
5
1
8165
907
1968
2020
10391
3
1
7679
853
1855
2021
9770
2
0
7219
802
1747
2022
9182
1
0
6784
754
1644
2023
8625
1
0
6371
708
1546
2024
8097
0
0
5980
664
1453
2025
7597
0
0
5610
623
1365
2026
7123
0
0
5258
584
1281
2027
6674
0
0
4925
547
1202
2028
6247
0
0
4608
512
1127
2029
5841
0
0
4307
479
1056
2030
5456
0
0
4021
447
988
2031
5091
0
0
3750
417
924
2032
4744
0
0
3492
388
864
2033
4415
0
0
3248
361
806
2034
4102
0
0
3016
335
751
2035
3805
0
0
2796
311
699
2036
3524
0
0
2587
287
650
2037
3256
0
0
2388
265
603
2038
3001
0
0
2199
244
558
2039
2761
0
0
2021
225
516
2040
2533
0
0
1851
206
476
2041
2316
0
0
1690
188
438
2042
2112
0
0
1539
171
402
2043
1918
0
0
1395
155
368
2044
1735
0
0
1260
140
336
2045
1563
0
0
1132
126
305
2046
1401
0
0
1013
113
276
2047
1250
0
0
901
100
249
2048
1108
0
0
796
88
224
2049
976
0
0
699
78
200
2050
854
0
0
609
68
178
2051
741
0
0
526
58
157
2052
638
0
0
451
50
137
2053
544
0
0
382
42
119
2054
459
0
0
320
36
103
2055
383
0
0
265
29
88
2056
316
0
0
217
24
75
2057
257
0
0
175
19
63
2058
207
0
0
139
15
52
2059
163
0
0
109
12
42
2060
127
0
0
84
9
34
2061
98
0
0
63
7
27
2062
74
0
0
47
5
21
2063
54
0
0
35
4
16
2064
40
0
0
25
3
12
2065
28
0
0
18
2
8
2066
19
0
0
12
1
6
2067
12
0
0
8
1
4
2068
7
0
0
5
1
2
2069
3
0
0
2
0
1
2070
0
0
0
0
0
0

1 HIV/AIDS=number of people living with either HIV (CD4>500+CD4<500) or AIDS