[Study on the mortality and risk factors among HIV-infected individuals during 1989 - 2011 in Dehong prefecture, Yunnan province].

Objective: To examine the mortality and risk factors among HIV-infected patients during 1989 - 2011 in Dehong prefecture, Yunnan province.

Methods: All HIV-infected patients reported during 1989 - 2011 in Dehong prefecture who held local residency were included in the study. Mortality rates and cumulative survival rates were calculated.

[Survey on contact tracing of newly reported HIV infections in 2009 in Dehong prefecture, Yunnan province].

Objective: To explore a new method for finding more HIV/AIDS.

Methods: In September 2009, newly reported HIV-infected individuals from May to August, 2009 in Dehong prefecture were asked to participate in a survey which requested demographic characteristics, history of high-risk behaviors and contact information of individuals with whom they had high risky contacts. People with risky contacts with HIV-infected cases (index cases) were also approached to participate in this survey and HIV testing was provided.

[Incidence and risk factors of HIV infection among sero-negative spouses of HIV patients in Dehong prefecture of Yunnan province].

Objective: To study the HIV incidence and risk factors among sero-negative spouses of HIV patients in Dehong prefecture of Yunnan province.

Methods: A cohort of sero-negative spouses of the HIV patients had been developed and followed up since November, 2005. HIV new infections and related behaviors had been investigated every six months.

[Tracing the sources of newly reported HIV infections in Dehong prefecture of Yunnan province].

Objective: To trace and provide HIV-testing among those having contacts with HIV-infected individuals at various levels in Dehong prefecture, Yunnan province and to evaluate the effectiveness and feasibility of such investigation as a supplemental strategy for HIV testing and control.

Methods: Newly reported HIV infections from August throughout October in Dehong prefecture, in 2008 were asked to provide contact information of persons whom they had high risk contacts with. Persons having had risk contacts with HIV-infected cases were here of interviewed and their blood tested on the sero-status of HIV.

[Incidence and risk factors on HIV infection among injection drug users in Dehong prefecture area of Yunnan province].

Objective: To determine the incidence and risk factors on HIV infection among injection drug users (IDU) in Dehong prefecture area of Yunnan province.

Methods: An epidemiological cohort of HIV-negative IDU had been developed and followed since October, 2004. HIV new infections and related behaviors had been investigated every six months.