t (years) Distribution of t 2005-2012 year Pt,2012 y Pt,2012. y <1 0.316 2012 0.339 44348 15052 ≥ 1 and <2 0.052 2013 0.051 44986 2294 ≥ 2 and <3 0.052 2014 0.051 45625 2327 ≥ 3 and <4 0.051 2015 0.051 46263 2359 ≥ 4 and <5 0.051 2016 0.050 46901 2345 ≥ 5 and <6 0.048 2017 0.048 47540 2282 ≥ 6 and <7 0.045 2018 0.045 48178 2168 ≥ 7 and <8 0.041 2019 0.040 48816 1953 ≥ 8 and <9 0.037 2020 0.390 49455 1929 ≥ 9 and <10 0.035 2021 0.035 50093 1753 ≥ 10 and <11 0.033 2022 0.031 50732 1573 ≥ 11 and <12 0.031 2023 0.027 51370 1387 ≥ 12 and <13 0.030 2024 0.023 52008 1196 ≥ 13 and <14 0.028 2025 0.020 52647 1053 ≥ 14 and <15 0.026 2026 0.014 53285 746 ≥ 15 and <16 0.025 2027 0.010 53923 539 ≥ 16 and <17 0.023 2028 0.008 54562 436 ≥ 17 and <18 0.019 2029 0.006 55200 331 ≥ 18 and <19 0.015 2030 0.005 55838 279 ≥ 19 and <20 0.012 2031 0.004 56477 226 ≥ 20 0.030 2032 0.003 57115 172 Estimated HIV Incidence among individuals aged 15 years and over 42401 Estimated total HIV Incidence 47573

Table 1: Distribution of the time lag (t) between HIV infection and the first CD4 count in the period 2005-2012, predicted proportions (Pt,2012) of cases receiving a CD4 test within estimated ranges of time since infection in 2012, predicted number of SISCEL cases (y) by year, and estimated HIV incidence. Brazil, 2012.

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