A AP PP PE EN ND DIIX X II:: H HIIV V ((N NO ON N--A AIID DS S)) A AN ND D A AIID DS S D DIIA AG GN NO OS SIIS S A AN ND D R RE EP PO OR RT TIIO ON NG G Y YE EA AR RS S
Year of Diagnosis versus Year of Report:
There are two dates associated with an HIV or AIDS case, the date of HIV or AIDS diagnosis and the date the case was reported to Orange County HIV/AIDS Surveillance and Monitoring. Most HIV/AIDS data reports utilize the report date to determine what year the case was reported. When showing case demographics in individual years, this data report will focus on the date that the case was diagnosed with HIV or AIDS. Presenting data by year of diagnosis gives a clearer picture of the current nature of the epidemic and the demographics of the most newly infected individuals. Due to reporting delays, diagnosis data for 2014 is incomplete as cases diagnosed in 2014 will continue to be reported throughout 2015. By using the year of report, the number of cases reported each year should be relatively stable making it appropriate to compare the most current year of reporting to previous years. However, when HIV reporting began by non-name code and again by name, additional surveillance efforts were made to identify cases of HIV or AIDS never reported into HARS. This resulted in an increased number of cases being reported that were not reflective of an increase in the epidemic, nor were they reflective of the demographics of persons newly diagnosed.
Overall HIV Case Reporting:
600
500 Figure A1:1. HIV Cases by Original Year of Report and Year of Diagnosis, Orange County, 1984-2014Reported Cases (Labeled) 534 Diagnosed Cases
454
Number 400
300
200 332 345
236 267
164 256
200 193 171 217 215
100
0
'84 '86 '88 '90 '92 '94 '96 '98 '00 '02 '04 '06 '08 '10 '12 '14^ Year
The first year of diagnosis for a case that is currently diagnosed HIV (non-AIDS) is 1984. ^2014 diagnosed cases are considered provisional due to reporting delays.
HIV reporting by non-name code originally began in 2002 although cases reported were diagnosed with HIV as early as 1984, as shown in Figure A1:1. The cases originally reported in 2002-2005 were reported by non-name code and have since been re-reported with a name. Of the 215 HIV cases reported in 2014, 190 cases were diagnosed in 2014. The increase in cases reported in 2008 is due to intensive surveillance efforts to identify cases previously unreported under either reporting methodology and included 249 cases (54.8%) that were diagnosed prior to the year 2002 (before HIV reporting began).
Overall AIDS Case Reporting:
800
700
600
Number 500
400
300
200
100
0 Figure A1:2. AIDS Cases by Year of Report and Year of Diagnosis, Orange County, 740 1980-2014
Reported Cases (Labled) Diagnosed Cases
461442
365
284
231256
0 2 2 11 35 61 92 496518
409
302286296
250 233234211231
174 226 233 267
228
165 181 143 141134
'80 '82 '84 '86 '88 '90 '92 '94 '96 '98 '00 '02 '04 '06 '08 '10 '12 '14^ Year
^2014 diagnosed cases are considered provisional due to reporting delays.
The initial Orange County AIDS case was reported in 1981 and, as shown in Figure A1:2, reported cases continued to rise each year until 1993, except for a slight decrease in 1992. Seven hundred and forty-one (740) AIDS cases were reported in Orange County in 1993, following the expansion of the Centers for Disease Control (CDC) AIDS surveillance case definition, which was implemented in January of that year. The decreasing and leveling of reported AIDS cases after 1995 coincides with advancements in treatment, particularly the introduction of highly active antiretroviral therapy (HAART). In 2014, Orange County reported 134 AIDS cases, (a decrease of 5.0% from the 141 cases reported in 2013) and 115 new AIDS cases were diagnosed.
