Chao-jun Yang

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OBJECTIVE To analyze the geographical distribution and risk factors of HIV-1 subtypes in Yunnan province. METHODS Blood samples from 1319 HIV positives were collected in Yunnan Province from 2001 to 2006. The nested polymerase chain reaction was used to amplify the gag (p24)-protease fragments from RNA extracted from plasma or sera. The sequences were(More)
OBJECTIVE This study is aimed at evaluating the utility of the portable CD4 analyzers (PIMA). METHODS The paired finger prick blood (25 µl) and 5 ml venous blood samples were collected from 196 HIV infected patients, who came to Yunnan CDC voluntary counseling and testing (VCT) clinic for CD4 test services, from May to August, 2012. The absolute CD4 cell(More)
OBJECTIVE BED-CEIA assay was used in HIV/AIDS surveillance sentinel sites to identify recent HIV-1 infection, to estimate HIV-1 incidence and to understand the epidemic trends in Yunnan province. METHODS Serum specimens were collected from IDUs in sentinel sites, attendants in STD clinics and pregnant women under a cross sectional study from 2000 to 2007.(More)
OBJECTIVE To explore the application of Dried Blood Spot (DBS) testing for early detection of HIV infection among infants. METHODS All of the infants aged between 6 weeks and 18 months and born by HIV positive mothers from 14 Maternity and Child Health Care Hospitals in Kunming, Dali, Dehong, Lincang of Yunnan province were investigated from 2010 to 2011.(More)
OBJECTIVE To timely identify the HIV-1 infection in window-period and to estimate the HIV-1 incidence among people who came for voluntary counseling and testing (VCT) service as well as men who have sex with men (MSM), respectively. METHODS HIV antibody negative samples that were determined by screening tests between January and October 2012, were(More)
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