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艾滋病监测的基础是每年艾滋病病例报告数。截止2002年11月22日,各国官方报告给WHO的艾滋病病例总数为2822111例,与2001年的2784317例相比增加了1.4％。对这些报告进行评价有两个局限,其中主要的局限是报告不完整。最严重国家,艾滋病病例报告的完整性少于10％,而在高度工业化国家,报告的完整性变动在75-94％之间。艾滋病病例报告的高度变化性和最严重国家病例报告的实质性低下限制了这些数据在评估全球艾滋病流行情况中的应用价值。第二点局限是世界各地区对艾滋病病例定义不同。接受抗逆转录病毒疗法治疗的人群增加也可影响艾滋病报告。
AIDS monitoring is based on the annual number of AIDS cases reported. As of 22 November 2002, the total number of AIDS cases officially reported to WHO by each country was 2,822,111, an increase of 1.4% over the 2,784,317 cases in 2001. There are two limitations to the evaluation of these reports, the main limitation being the incompleteness of the report. In the worst-case countries, AIDS cases reported less than 10% of completeness, while in highly industrialized countries, the reported completeness of change varied between 75-94%. The high variability of AIDS case reports and the substantive underreporting of the most serious national case-studies limit the value of these data in assessing the global AIDS epidemic. The second limitation is the definition of AIDS cases in different regions of the world. The increase in people receiving antiretroviral therapy can also affect AIDS reporting.