Numbers of people with HIV/AIDS reported and not reported to surveillance in Japan

Shuji Hashimoto, Miyuki Kawado, Yoshitaka Murakami, Seiichi Ichikawa, Hirokazu Kimura, Yosikazu Nakamura, Masahiro Kihara, Kazuo Fukutomi

Research output: Contribution to journalArticle

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Abstract

Background: Trends in the numbers of Japanese patients with human immunodeficiency virus (HIV) and acquired immunodeficiency syndrome (AIDS) reported to the HIV/AIDS surveillance system in Japan were examined. We attempted to estimate the cumulative number of Japanese with HIV, including people with HIV not reported to the surveillance. Methods: Data from the HIV/AIDS surveillance in Japan up to the end of 2002 were available. The number of unreported HIV cases was estimated using the back-calculation method. To evaluate this method, the number of reported HIV cases up to 1996 (before highly active antiretroviral treatments were widely available in Japan) was compared with the number estimated by the same method. Results: The number of AIDS cases who were initially reported as having AIDS without having been reported as HIV-infected markedly increased as did the number of reported HIV cases. The number of AIDS cases who had been initially reported as HIV-infected and who were then reported as AIDS progression increased up to 1996 but decreased in the period of 1997-2002. The cumulative number of people with HIV at the end of 2002 was estimated as 14,000, which was 4.2 times higher than the number of reported HIV cases. The cumulative number of HIV cases reported up to 1996 was nearly equal to the number estimated by the above-mentioned method. Conclusions: HIV infection would appear to be spreading widely among Japanese population. The number of HIV cases actually reported to surveillance might still be low.

Original languageEnglish
Pages (from-to)182-186
Number of pages5
JournalJournal of epidemiology
Volume14
Issue number6
DOIs
Publication statusPublished - 01-12-2004

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Japan
Acquired Immunodeficiency Syndrome
HIV
Virus Diseases

All Science Journal Classification (ASJC) codes

  • Epidemiology

Cite this

Hashimoto, S., Kawado, M., Murakami, Y., Ichikawa, S., Kimura, H., Nakamura, Y., ... Fukutomi, K. (2004). Numbers of people with HIV/AIDS reported and not reported to surveillance in Japan. Journal of epidemiology, 14(6), 182-186. https://doi.org/10.2188/jea.14.182
Hashimoto, Shuji ; Kawado, Miyuki ; Murakami, Yoshitaka ; Ichikawa, Seiichi ; Kimura, Hirokazu ; Nakamura, Yosikazu ; Kihara, Masahiro ; Fukutomi, Kazuo. / Numbers of people with HIV/AIDS reported and not reported to surveillance in Japan. In: Journal of epidemiology. 2004 ; Vol. 14, No. 6. pp. 182-186.
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Hashimoto, S, Kawado, M, Murakami, Y, Ichikawa, S, Kimura, H, Nakamura, Y, Kihara, M & Fukutomi, K 2004, 'Numbers of people with HIV/AIDS reported and not reported to surveillance in Japan', Journal of epidemiology, vol. 14, no. 6, pp. 182-186. https://doi.org/10.2188/jea.14.182

Numbers of people with HIV/AIDS reported and not reported to surveillance in Japan. / Hashimoto, Shuji; Kawado, Miyuki; Murakami, Yoshitaka; Ichikawa, Seiichi; Kimura, Hirokazu; Nakamura, Yosikazu; Kihara, Masahiro; Fukutomi, Kazuo.

In: Journal of epidemiology, Vol. 14, No. 6, 01.12.2004, p. 182-186.

Research output: Contribution to journalArticle

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T1 - Numbers of people with HIV/AIDS reported and not reported to surveillance in Japan

AU - Hashimoto, Shuji

AU - Kawado, Miyuki

AU - Murakami, Yoshitaka

AU - Ichikawa, Seiichi

AU - Kimura, Hirokazu

AU - Nakamura, Yosikazu

AU - Kihara, Masahiro

AU - Fukutomi, Kazuo

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Y1 - 2004/12/1

N2 - Background: Trends in the numbers of Japanese patients with human immunodeficiency virus (HIV) and acquired immunodeficiency syndrome (AIDS) reported to the HIV/AIDS surveillance system in Japan were examined. We attempted to estimate the cumulative number of Japanese with HIV, including people with HIV not reported to the surveillance. Methods: Data from the HIV/AIDS surveillance in Japan up to the end of 2002 were available. The number of unreported HIV cases was estimated using the back-calculation method. To evaluate this method, the number of reported HIV cases up to 1996 (before highly active antiretroviral treatments were widely available in Japan) was compared with the number estimated by the same method. Results: The number of AIDS cases who were initially reported as having AIDS without having been reported as HIV-infected markedly increased as did the number of reported HIV cases. The number of AIDS cases who had been initially reported as HIV-infected and who were then reported as AIDS progression increased up to 1996 but decreased in the period of 1997-2002. The cumulative number of people with HIV at the end of 2002 was estimated as 14,000, which was 4.2 times higher than the number of reported HIV cases. The cumulative number of HIV cases reported up to 1996 was nearly equal to the number estimated by the above-mentioned method. Conclusions: HIV infection would appear to be spreading widely among Japanese population. The number of HIV cases actually reported to surveillance might still be low.

AB - Background: Trends in the numbers of Japanese patients with human immunodeficiency virus (HIV) and acquired immunodeficiency syndrome (AIDS) reported to the HIV/AIDS surveillance system in Japan were examined. We attempted to estimate the cumulative number of Japanese with HIV, including people with HIV not reported to the surveillance. Methods: Data from the HIV/AIDS surveillance in Japan up to the end of 2002 were available. The number of unreported HIV cases was estimated using the back-calculation method. To evaluate this method, the number of reported HIV cases up to 1996 (before highly active antiretroviral treatments were widely available in Japan) was compared with the number estimated by the same method. Results: The number of AIDS cases who were initially reported as having AIDS without having been reported as HIV-infected markedly increased as did the number of reported HIV cases. The number of AIDS cases who had been initially reported as HIV-infected and who were then reported as AIDS progression increased up to 1996 but decreased in the period of 1997-2002. The cumulative number of people with HIV at the end of 2002 was estimated as 14,000, which was 4.2 times higher than the number of reported HIV cases. The cumulative number of HIV cases reported up to 1996 was nearly equal to the number estimated by the above-mentioned method. Conclusions: HIV infection would appear to be spreading widely among Japanese population. The number of HIV cases actually reported to surveillance might still be low.

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