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Objective:To investigate the distributions of human immunodeficiency virus (HIV) and hepatitis C virus (HCV) genotypes among newly reported HIV/HCV co-infected Burmese patients in Dehong Dai and Jingpo Autonomous Prefecture, Yunnan Province from 2016 to 2019.Methods:A total of 1 289 newly reported HIV/HCV co-infected Burmese patients in Dehong Dai and Jingpo Autonomous Prefecture were collected through the National Acquired Immunodeficiency Syndrome Comprehensive Prevention and Control Data Information System From January 2016 to December 2019. Among them, 996 subjects with a plasma volume of ≥200 μL were selected to perform HIV and HCV genotyping. The HIV pol gene, the HCV core protein-binding envelope protein ( CE1) gene and non-structural protein 5B ( NS5 B) gene were amplified using the nested polymerase chain reaction.The phylogenetic tree was constructed by MEGA 7.0 software to classify the genotypes. Chi-square test was used for statistical analysis. Trend chi-square test was used to analyze the trend of HIV and HCV genotypes. Results:Among the 996 cases with HIV/HCV co-infection, HIV and HCV sequences from a total of 554 subjects (55.6%, 554/996) were successfully obtained, and the genotypes of HIV and HCV were diverse. HIV genotype C (40.3%, 223/554) and BC recombinant (33.6%, 186/554) were the most prevalent, followed by genotype B (6.5%, 36/554) and circulating recombinant form (CRF)01_AE (3.6%, 20/554). HCV genotype 3b was the most prevalent (31.2%, 173/554), followed by genotype 6u (19.5%, 108/554), 1a (17.5%, 97/554), 6n (11.4%, 63/554), 3a (8.7%, 48/554) and 6xg (6.3%, 35/554). The prevalence of HIV genotype C showed a downward trend ( χtrend2=7.23, P<0.001), while the prevalence of BC recombinant showed an upward trend ( χtrend2=5.97, P<0.001), and the proportion of BC recombinant was higher than genotype C in 2019 (54.9%(101/184) vs 21.7%(40/184)). However, there were no statistically significant differences in the proportions of genotype 3b, 6u and 1a from 2016 to 2019 ( χtrend2=1.43, 1.79 and 0.39, respectively, P=0.152, 0.074 and 0.695, respectively). The HIV genotype distribution among patients with different ethnic groups were significantly different ( χ2=22.06, P=0.037). Conclusions:The diversity of HIV and HCV genotypes is high and complex among HIV/HCV co-infected Burmese patients in Dehong Dai and Jingpo Autonomous Prefecture. BC recombinant shows a trend of becoming the predominant HIV genotype among these co-infected patients. Therefore, surveillance of the prevalence of HCV and HIV genotypes in Burmese population needs to be further strengthened.
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Objective@#To study the prevalence and correlates of diabetes among HIV/AIDS who were on antiretroviral therapy (ART) in Dehong Dai and Jingpo autonomous prefectures (Dehong), Yunnan province.@*Methods@#The database of HIV/AIDS receiving ART in Dehong was downloaded by using the basic information system of AIDS prevention and control in China. In this cross-sectional study, HIV/AIDS patients who were currently on ART and aged 18 years or above, were consecutively recruited, between July 2017 and June 2018, in Dehong. All the subjects underwent hemoglobin A1c (HbA1c) testing. Patient with diabetes was defined as meeting any of these indicators (HbA1c ≥6.5%, baseline FPG ≥7.0 mmol/L, FPG ≥7.0 mmol/L in the most recent visit). Both univariate and multivariate logistic regression analysis were carried on to evaluate the correlates of diabetes among the HIV/AIDS patients.@*Results@#In total of 4 376 HIV/AIDS patients were included for analysis, with the average age as (43.7±10.1) years, proportion of males as 53.8% (2 356/4 376) and the HCV positive rate as 24.1% (1 055/4 376). The mean years was (8.9±3.8) years after the HIV diagnosis was made, and the mean duration on treatment was (6.8±2.9) years. The prevalence of diabetes was 11.4% (500/4 376). Through multivariate logistic regression analysis, data showed that the risk factors of diabetes of HIV/AIDS on ART were: aged 40 years or above, being male, HCV positive, baseline body mass index ≥24.0 kg/m2, elevated TG ≥1.70 mmol/L in the most recent visit and baseline antiretroviral regimens under Efavirenz (EFV).@*Conclusions@#Prevalence rate of diabetes appeared higher in HIV/AIDS patients who were on ART in Dehong. Prevention and control measures should be targeted on HIV/AIDS patients who were with risk factors of diabetes as being elderly, male, HCV positive, overweight and higher TG. Further esearch is needed to evaluate the association between the use of EFV and diabetes.
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Objective@#To understand the distribution of HIV-1 genotypes and the status of drug resistance among people living with HIV who had prepared to initiate antiretroviral therapy (ART) in Dehong Dai and Jingpo autonomous prefecture (Dehong).@*Methods@#A total of 170 adults with HIV were recruited in Dehong from January to June 2017, before initiating ART. HIV-1 pol genes were amplified and used to analyze the HIV-1 genotypes and drug resistance.@*Results@#A total of 147 samples were successfully sequenced. Based on the phylogenetic analysis, 12 HIV-1 genotypes were found among the subjects, including three predominant genotypes such as subtype C (29.9%, 44/147), unique recombinant forms (URFs) (27.2%, 40/147) and CRF01_AE (19.7%, 29/147). Circulating recombinant forms (CRFs) which were newly identified in this area in recent years were also found among these subjects, including CRF62_BC, CRF64_BC, CRF86_BC and CRF96_cpx. The distribution of HIV-1 genotypes between heterosexual transmission or intravenous drug use, showed statistical difference. Surveillance drug resistance mutations (SDRMs) were found among 8.8% (13/147) of the subjects. Proportion of drug resistant strains among injecting drug users (25.0%, 8/32) was higher than that among those heterosexual transmitted individuals (4.6%, 5/109, χ2=10.166, P=0.002).@*Conclusions@#Among people living with HIV-1 who had prepared to initiate ART, their HIV-1 genetics were highly complicated, with moderate prevalence rate of HIV-1 drug-resistant strains.
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Objective: To understand the characteristics on major strain subtypes of hepatitis C virus among HIV/HCV co-infected patients, so as to explore the molecular transmission clusters and related risk factors of HCV strains. Methods: A total of 336 newly reported HIV-infected patients were diagnosed as HIV/HCV co-infection in Dehong Dai and Jingpo autonomous prefecture (Dehong) in 2016. We used Nested PCR to amplify CE1 and NS5B genes among 318 samples with plasma levels above 200 μl, before using the combining phylogenetic tree and constructing molecular propagation network method to analyze the related data. Results: A total of 267 HIV/HCV co-infection patients who had met the HCV genotyping requirements were screened the gene subtypes were diversified. Among these genotypes, proportions of 3b, 6n, 6u, 1a, 3a and other subtypes appeared as 32.6% (87/267), 18.4% (49/267), 15.7%(42/267), 13.1%(35/267), 11.2%(30/267) and 9.0%(24/267) respectively. Molecular transmission network of five major HCV genotypes was constructed with a clustering rate of 39.1% (95/243). The clustering rate of subtype 1a was the highest, as 71.4% (25/35). Results from the multivariate logistic regression showed that ethnic minorities other than the Yi and Jingpo (vs. the Han, OR=0.17, 95%CI: 0.04-0.71), the married spouses (vs. the unmarried, OR=0.42, 95%CI: 0.18-0.94), the 6n and 3a subtype (vs. the 3b subtype, OR=0.34, 95%CI: 0.12-0.95; OR=0.22, 95%CI: 0.05-0.93) were more difficult to form transmission clusters. However, the 6u and 1a subtype (vs. the 3b subtype, OR=3.10, 95%CI: 1.21-7.94; OR=4.00, 95%CI: 1.32-12.11) seemed more likely to form the transmission clusters. Conclusion: Ethnicity, marital status and genetic subtypes were factors significantly associated with the formation of transmission clusters related to the major HCV gene subtypes among newly reported HIV/HCV co-infection in Dehong.
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Humans , AIDS-Related Opportunistic Infections/virology , Asian People , China/epidemiology , Coinfection , Genotype , HIV Infections/virology , Hepacivirus/isolation & purification , Hepatitis C/virology , Phylogeny , Polymerase Chain ReactionABSTRACT
Objective To understand the characteristics on major strain subtypes of hepatitis C virus among HIV/HCV co-infected patients,so as to explore the molecular transmission clusters and related risk factors of HCV strains.Methods A total of 336 newly reported HIV-infected patients were diagnosed as HIV/HCV co-infection in Dehong Dai and Jingpo autonomous prefecture (Dehong)in 2016.We used Nested PCR to amplify CE 1 and NS5B genes among 318 samples with plasma levels above 200 μl,before using the combining phylogenetic tree and constructing molecular propagation network method to analyze the related data.Results A total of 267 HIV/HCV co-infection patients who had met the HCV genotyping requirements were screened the gene subtypes were diversified.Among these genotypes,proportions of 3b,6n,6u,1a,3a and other subtypes appeared as 32.6％ (87/267),18.4％ (49/267),15.7％(42/267),13.1％(35/267),11.2％(30/267) and 9.0％(24/267) respectively.Molecular transmission network of five major HCV genotypes was constructed with a clustering rate of 39.1％ (95/243).The clustering rate of subtype la was the highest,as 71.4％ (25/35).Results from the multivariate logistic regression showed that ethnic minorities other than the Yi and Jingpo (vs.the Han,OR=0.17,95％ CI:0.04-0.71),the married spouses (vs.the unmarried,OR=0.42,95％ CI:0.18-0.94),the 6n and 3a subtype (vs.the 3b subtype,OR=0.34,95％CI:0.12-0.95;OR=0.22,95％CI:0.05-0.93) were more difficult to form transmission clusters.However,the 6u and 1a subtype (vs.the 3b subtype,OR=3.10,95％CI:1.21-7.94;OR=4.00,95％CI:1.32-12.11) seemed more likely to form the transmission clusters.Conclusion Ethnicity,marital status and genetic subtypes were factors significantly associated with the formation of transmission clusters related to the major HCV gene subtypes among newly reported HIV/HCV co-infection in Dehong.
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Objective@#To obtain HIV incidence among injection drug users (IDU) and female sex workers (FSW) in Dehong Prefecture, Yunnan Province during 2009-2017.@*Methods@#We recruited drug users and female sex workers from all sentinel surveillance sites across Dehong Prefecture during 2009-2017. A total of 10 480 IDU and 18 126 FSW in Dehong Prefecture were recruited by fingerprint technique. Data about drug uses, commercial sexual behavior, sociodemographic characteristics was collected by structured questionnaire. HIV-positive patients who were long-term infected or with CD4+ T cell count was ≤200 were not included for further HIV incidence testing. Also, those who self-identified as on antiretroviral treatment (ART) or AIDS cases were also excluded. A total of 841 and 157 plasma specimens from IDU and FSW that met the inclusion criterion were finally included, respectively. Limiting antigen avidity enzyme immunoassay(LAg-Avidity EIA) were performed to calculate the HIV incidence among these two sub-populations.@*Results@#A total of 3 444 IDU were HIV-positive, among which 884 (25.7%) were Burmese with age of (30.4±7.7), and 2 560 were Chinese with age of (36.6±7.3). Among 228 HIV-positive FSW, 109 (47.8%) were Burmese with age of (27.1±6.3), 119 (52.5%) were Chinese with age of (29.9±11.1). For IDU, the estimated HIV incidence among Burmese in 2009-2010, 2011-2012, 2013-2014, 2015-2017 was 4.20% (95%CI: -0.55%-8.95%), 7.75% (95%CI: 2.95%-12.55%), 11.79% (95%CI: 5.38%-18.20%), 10.30% (95%CI: 5.67%-14.94%), respectively, while Chinese were 3.11% (95%CI: 1.59%-4.64%), 0.03% (95%CI: -0.03%-0.08%), 1.55% (95%CI: 0.54%-2.57%), 0.58% (95%CI: -0.06%-1.04%), respectively. In 2009-2011, 2012-2014, 2015-2017, estimated HIV incidence among Burmese FSW was 0.22% (95%CI: -0.21%-0.64%), 1.24%(95%CI: 0.15%-2.32%), 0.55%(95%CI: 0.01%-1.08%). Whereas, estimated HIV incidence among Chinese FSW was 0.62% (95%CI: 0.25%-0.98%), 0.11% (95%CI: -0.04%-0.26%), 0.22% (95%CI: 0-0.44%).@*Conclusion@#HIV incidences among Chinese IDU and FSW are on the downward trend, while Burmese IDU and FSW seem to be gaining momentum.
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Objective: To explore distribution of HIV gene subtypes among newly reported HIV/AIDS cases from China and Myanmar in Dehong Dai and Jingpo prefecture of Yunnan province in 2016. Methods: We conducted DNA extractions from newly reported HIV/AIDS cases in 2016. The gag, env and pol genes were amplified by using reverse transcription-PCR (RT-PCR) and sequenced to identify HIV subtypes. Results: A total of 1 112 newly diagnosed HIV cases were reported in Dehong in 2016, and the HIV subtypes were identified for 860 cases. Subtype C was predominant (33.6%), followed by unique recombinant forms (URFs) (28.4%), CRF01_AE (18.6%) and so on. URFs include four recombination, among which the recombination of CRF01_AE and C subtype were predominant. The HIV subtype distribution was associated with nationality and transmission route in HIV/AIDS cases from Myanmar. Conclusions: The gene subtypes of C, URFs and CRF01_AE were mainly distributed; distribution of URFs remained complex and diverse among newly reported HIV/AIDS cases in Dehong in 2016.
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Humans , Male , Base Sequence , China/epidemiology , Ethnicity/genetics , Genes, pol , Genotype , HIV Infections/genetics , HIV-1/genetics , Phylogeny , Polymerase Chain Reaction/methods , SerogroupABSTRACT
Objective To explore distribution of HIV gene subtypes among newly reported HIV/AIDS cases from China and Myanmar in Dehong Dai and Jingpo prefecture of Yunnan province in 2016.Methods We conducted DNA extractions from newly reported HIV/AIDS cases in 2016.The gag,env and pol genes were amplified by using reverse transcription-PCR (RT-PCR) and sequenced to identify HIV subtypes.Results A total of 1 112 newly diagnosed HIV cases were reported in Dehong in 2016,and the HIV subtypes were identified for 860 cases.Subtype C was predominant (33.6％),followed by unique recombinant forms (URFs) (28.4％),CRF01_AE (18.6％) and so on.URFs include four recombination,among which the recombination of CRF01 AE and C subtype were predominant.The HIV subtype distribution was associated with nationality and transmission route in HIV/AIDS cases from Myanmar.Conclusions The gene subtypes of C,URFs and CRF01_AE were mainly distributed;distribution of URFs remained complex and diverse among newly reported HIV/AIDS cases in Dehong in 2016.
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Objective@#To study the prevalence and correlates of unprotected sexual intercourse within HIV serodiscordant couples in Dehong prefecture, Yunnan Province, China, in 2014.@*Methods@#This study was based on the follow-up investigation of "the AIDS cohort of seronegative spouses of HIV-infected individuals in Dehong prefecture" in 2014. The 1 520 participants were HIV seronegative spouses from all five counties/cities of Dehong prefecture who voluntarily participated in the cohort. Inclusion criteria included: having a HIV-positive spouse; ≥16 years of age; having had sexual intercourse with spouse in the past year; and being a resident of Dehong prefecture. Information on HIV-positive spouses were also collected through the local AIDS epidemic database. Chi square analysis was performed to compare differences in the rates of unprotected sexual intercourse between participants with different characteristics and lifestyle choices. Multivariable logistic regression model analysis was performed to determine correlates with unprotected sexual intercourse.@*Results@#The 1 520 participants had a mean age of 38.7±9.4, compared with 39.7±8.9 for their HIV-positive spouses. Among the HIV-positive spouses, 77.8% (1 183/1 520) had been infected for more than 3 years, and 87.6% (1 332/1 520) had received antiretroviral therapy. The prevalence of unprotected sexual intercourse within serodiscordant couples over the past 12 months was 16.1% (244/1 520). The prevalence of unprotected sexual intercourse correlated with the level of education of HIV-negative spouses (illiterate vs. middle school and above, OR=1.58, P=0.044), the number of years since diagnosis of HIV-positive spouses (short vs. long, OR=1.6, P=0.006), antiretroviral therapy of HIV-positive spouses (no vs. yes, OR=2.78, P<0.001), the frequency of sexual intercourse per month (high vs. low, OR=1.66, P=0.019), and whether the couple had children (no vs. yes, OR=1.72, P=0.007).@*Conclusion@#The prevalence of unprotected sexual intercourse within serodiscordant couples in Dehong prefecture was relatively high in 2014. Factors found to correlate with the occurrence of unprotected sexual intercourse within these couples included illiteracy of HIV-negative spouses, short time since diagnosis of HIV-positive spouses and lack of antiretroviral therapy, high frequency of sexual intercourse and no children.
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Objective To determine the prevalence of human immunodeficiency virus (HIV) primary drug resistance (HIV-PDR) in newly reported HIV-infected individuals in Dehong Prefecture,Yunnan Province in 2015.Methods Newly reported HIV-positive patients who had viral load ≥ 1 000 copies/mL from January to November in 2015 were tested for HIV-PDR by reverse transcriptionpolymerase chain reaction (RT-PCR) and HIV pol gene sequencing.HIV-PDR was determined according to the Surveillance Drug Resistance Mutations (SDRM) list of Stanford University,which was recommended by World Health Organization (WHO) in 2009.Results A total of 322 newly reported HIV-infected cases whose pol gene was successfully amplified were included in the final analysis.Of them,211 (65.5％) were male,and 229 (71.1％) were sexually transmitted.A total of 152 (47.2％) were Chinese.A total of 29 HIV subtypes were found,including type B (12.1％),type C (28.0％),type CRF01_AE (24.5％),type CRF07_BC (5.9％),type CRF08_BC (5.6％),type 62_BC (7.5％),type BC-new breakpoint (3.4％) and other subtypes (13％).Six patients (1.9％) were defined as primary resistance to HIV according to the WHO standard.Conclusions The prevalence of HIV-PDR is 1.9％ among newly reported HIV-infected individuals,which is relatively low in the studied area.But HIV-PDR surveillance should be strengthened in this area with the scaling up of antiretroviral therapy.
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Objective To understand the current status of receiving no methadone maintenance treatment (MMT) and influencing factors in HIV infected injecting drug users (IDUs) in Dehong Dai and Jingpo autonomous prefectures,Yunnan province.Methods Data of survival of IDUs with AIDS in Dehong were collected from "Chinese National Comprehensive HIV/AIDS and Care Information System" in December,2014.Results There were 987 IDUs who should receive MMT,the majority of them were males (94.6％,934/987),aged 35-44 years (53.0％,523/987) and farmers (77.2％,762/987).Among the 987 IDUs,60.2％ (592/987) received no MMT.Multivariate logistic regression analysis showed that being female (OR=2.66,95％CI:1.21-5.87),in Jingpo ethnic group (OR=3.05,95％CI:1.97-4.71) were the major risk factors for receiving no MMT;not being farmers (OR=0.46,95％CI:0.31-0.70),in Dai ethnic group (OR=0.53,95％CI:0.36-0.79),diagnosed HIV infection history ≥ 10 years (OR=0.60,95％CI:0.45-0.81) were the major protective factors for receiving no MMT.The reasons for receiving no MMT included long distance journey (289,48.8％),fear of exposure (124,20.9％),poor daily medication compliance (59,10.0％),fear of side effects (47,7.9％),others (73,12.3％).Conclusions The proportion of receiving no MMT in IDUs with AIDS in Dehong was high.Being female and farmer,in Jingpo ethnic group,low educational level,short diagnosed HIV infection history were influencing factors for receiving no MMT.The effective intervention measures should be taken to further improve MMT coverage according to the different characteristics of the patients.
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Objective To study the HIV-1 drug resistance transmission level in HIV infected persons receiving no antiviral therapy in Dehong prefecture of Yunnan province in 2015.Methods A total of 72 plasma samples were collected from recently reported HIV-infected persons aged 16-25 years in Dehong from January to July 2015 for drug resistance gene detection.Results Forty eight samples were successfully sequenced and analyzed.Among them,31.2％ (15/48) were from Chinese,and 68.8％ (33/48) were from Burmese.Based on pol sequences,HIV genotypes included URF (52.08％,25/48),CRF01_AE (16.67％,8/48),RF07_BC (10.42％,5/48),subtype B (6.25％,3/48),subtype C (6.25％,3/48),CRF57_BC (6.25％,3/48) and CRF08_BC (2.08％,1/48).One drug resistant mutation site to non-nucleoside analog reverse transcriptase inhibitor (NNRTI) and two drug resistant mutation site to nucleoside analog reverse transcriptase inhibitor (NRTI) were detected in four sequences.Based on the statistical method of HIV drug resistance threshold survey,the prevalence of HIV-1 drug resistant strain was 5％-15％.Conclusions The proportion of Burmese among newly reported HIV-infected individuals aged 16-25 years in Dehong in 2015 was higher.HIV-1 genetic diversity was found in Dehong.The prevalence of HIV-1 drug resistant strain had reached a moderate level in Dehong.
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Objective To explore the distribution of HIV subtype in newly detected people living with HIV from January to November,2015 in Dehong Dai and Jingpo Autonomous Prefecture,Yunnan province.Methods DNA extraction,reverse transcription polymerase chain reaction (RT-PCR) for gag,env,and pol amplification and amplification product sequencing were conducted by using plasmas of newly detected HIV-infected persons.The subtypes were confirmed by analyzing the sequences of 3 genes.Results A total of 963 HIV infection cases were reported during this period,the HIV subtype was confirmed in 499 cases.Unique recombinant form (URF) was the most common subtype (27.1％,135/499),followed by C (26.7％,133/499),CRF01_AE (19.2％,96/499) and others.URF included 4 kinds of combination,of which combination of subtype B and C was most common.HIV subtype distribution differed between the Chinese HIV infection cases and the Burmese HIV infection cases,the proportion of B and C combination was higher in the Chinese cases.Transmission route was the only factor influencing H1V subtype distribution.Conclusions HIV subtype distribution in Dehong was complex.URF was predominant.The HIV subtype distribution differed between Chinese and Burmese under different transmission route.
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Objective To understand the epidemiological characteristics of newly reported HIV infections in Chinese and Burmese residents during 2012-2016 in Dehong Dai and Jingpo Autonomous Prefecture of Yunnan province (Dehong) and to provide evidence for the development of related programs on prevention and control.Methods All the HIV infections who were newly reported during 2012-2016 in Dehong,were recruited as the study subjects,with epidemiological characteristics of the cases analyzed by using the software SPSS 22.0.Results A total of 5 692 HIV infections were newly reported between 2012 and 2016 (including 5 592 in this study),in which the Chinese patients accounted for 43.3％ (2 419) and the rest 56.7％ (3 173) were Burmese.Differences in age,gender and other social characteristics of these newly reported HIV infections were statistically significant between the Chinese and the Burmese (all p-values ＜0.05).Most cases were males and between the age of 20-49 years old.Other characteristics of the patients would include:having had primary school education,married,being farmers,and with CD4+ T cells counts ≥350 cells/μl.HIV infection was mainly transmitted through sexual contact among the Chinese patients but through injecting drug use among the Burmese patients.Conclusions Epidemiological characteristics of the newly reported HIV infections were different between the Chinese and the Burmese,between 2012 and 2016 in Dehong.Targeted prevention and control programs should be taken.
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Objective To understand the current status of receiving no methadone maintenance treatment (MMT) and influencing factors in HIV infected injecting drug users (IDUs) in Dehong Dai and Jingpo autonomous prefectures,Yunnan province.Methods Data of survival of IDUs with AIDS in Dehong were collected from "Chinese National Comprehensive HIV/AIDS and Care Information System" in December,2014.Results There were 987 IDUs who should receive MMT,the majority of them were males (94.6％,934/987),aged 35-44 years (53.0％,523/987) and farmers (77.2％,762/987).Among the 987 IDUs,60.2％ (592/987) received no MMT.Multivariate logistic regression analysis showed that being female (OR=2.66,95％CI:1.21-5.87),in Jingpo ethnic group (OR=3.05,95％CI:1.97-4.71) were the major risk factors for receiving no MMT;not being farmers (OR=0.46,95％CI:0.31-0.70),in Dai ethnic group (OR=0.53,95％CI:0.36-0.79),diagnosed HIV infection history ≥ 10 years (OR=0.60,95％CI:0.45-0.81) were the major protective factors for receiving no MMT.The reasons for receiving no MMT included long distance journey (289,48.8％),fear of exposure (124,20.9％),poor daily medication compliance (59,10.0％),fear of side effects (47,7.9％),others (73,12.3％).Conclusions The proportion of receiving no MMT in IDUs with AIDS in Dehong was high.Being female and farmer,in Jingpo ethnic group,low educational level,short diagnosed HIV infection history were influencing factors for receiving no MMT.The effective intervention measures should be taken to further improve MMT coverage according to the different characteristics of the patients.
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Objective To study the HIV-1 drug resistance transmission level in HIV infected persons receiving no antiviral therapy in Dehong prefecture of Yunnan province in 2015.Methods A total of 72 plasma samples were collected from recently reported HIV-infected persons aged 16-25 years in Dehong from January to July 2015 for drug resistance gene detection.Results Forty eight samples were successfully sequenced and analyzed.Among them,31.2％ (15/48) were from Chinese,and 68.8％ (33/48) were from Burmese.Based on pol sequences,HIV genotypes included URF (52.08％,25/48),CRF01_AE (16.67％,8/48),RF07_BC (10.42％,5/48),subtype B (6.25％,3/48),subtype C (6.25％,3/48),CRF57_BC (6.25％,3/48) and CRF08_BC (2.08％,1/48).One drug resistant mutation site to non-nucleoside analog reverse transcriptase inhibitor (NNRTI) and two drug resistant mutation site to nucleoside analog reverse transcriptase inhibitor (NRTI) were detected in four sequences.Based on the statistical method of HIV drug resistance threshold survey,the prevalence of HIV-1 drug resistant strain was 5％-15％.Conclusions The proportion of Burmese among newly reported HIV-infected individuals aged 16-25 years in Dehong in 2015 was higher.HIV-1 genetic diversity was found in Dehong.The prevalence of HIV-1 drug resistant strain had reached a moderate level in Dehong.
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Objective To explore the distribution of HIV subtype in newly detected people living with HIV from January to November,2015 in Dehong Dai and Jingpo Autonomous Prefecture,Yunnan province.Methods DNA extraction,reverse transcription polymerase chain reaction (RT-PCR) for gag,env,and pol amplification and amplification product sequencing were conducted by using plasmas of newly detected HIV-infected persons.The subtypes were confirmed by analyzing the sequences of 3 genes.Results A total of 963 HIV infection cases were reported during this period,the HIV subtype was confirmed in 499 cases.Unique recombinant form (URF) was the most common subtype (27.1％,135/499),followed by C (26.7％,133/499),CRF01_AE (19.2％,96/499) and others.URF included 4 kinds of combination,of which combination of subtype B and C was most common.HIV subtype distribution differed between the Chinese HIV infection cases and the Burmese HIV infection cases,the proportion of B and C combination was higher in the Chinese cases.Transmission route was the only factor influencing H1V subtype distribution.Conclusions HIV subtype distribution in Dehong was complex.URF was predominant.The HIV subtype distribution differed between Chinese and Burmese under different transmission route.
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Objective To understand the epidemiological characteristics of newly reported HIV infections in Chinese and Burmese residents during 2012-2016 in Dehong Dai and Jingpo Autonomous Prefecture of Yunnan province (Dehong) and to provide evidence for the development of related programs on prevention and control.Methods All the HIV infections who were newly reported during 2012-2016 in Dehong,were recruited as the study subjects,with epidemiological characteristics of the cases analyzed by using the software SPSS 22.0.Results A total of 5 692 HIV infections were newly reported between 2012 and 2016 (including 5 592 in this study),in which the Chinese patients accounted for 43.3％ (2 419) and the rest 56.7％ (3 173) were Burmese.Differences in age,gender and other social characteristics of these newly reported HIV infections were statistically significant between the Chinese and the Burmese (all p-values ＜0.05).Most cases were males and between the age of 20-49 years old.Other characteristics of the patients would include:having had primary school education,married,being farmers,and with CD4+ T cells counts ≥350 cells/μl.HIV infection was mainly transmitted through sexual contact among the Chinese patients but through injecting drug use among the Burmese patients.Conclusions Epidemiological characteristics of the newly reported HIV infections were different between the Chinese and the Burmese,between 2012 and 2016 in Dehong.Targeted prevention and control programs should be taken.
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Objective To evaluate liver injury in patients with hepatitis C virus (HCV)/human immunodeficiency virus (HIV) coinfection in Dehong Prefecture,Yunnan Province.Methods A total of 4 784 HIV-infected patients were enrolled in this study.Baseline aspartate aminotransferase (AST),alanine aminotransferase (ALT) and AST-to-platelet ratio index (APRI) before HIV treatment were collected to analyze the relationship between HCV infection and liver injury.Data were analyzed by x2 test and nonparametric rank sum test when appropriate.Risk factors for liver injury were analyzed by multivariate Logistic regression.Results Totally 4 784 patients were included,of which 30.2％ (1 447/ 4 784) were anti-HCV positive,41.7％ (1 996/4 784) had liver dysfunction and 13.3％ (636/4 784) had liver cirrhosis.Prevalence of liver dysfunction (61.1％,821/1 343) and cirrhosis (24.1 ％,323/1 343) were significantly higher among anti-HCV-positive patients than anti-HCV-negative patients (31.5％,974/3 092,X2=341.223,P＜0.01;7.5％,231/3 092,X2=235.457,P＜0.01,respectively).Multivariate Logistic regression showed that anti-HCV-positive patients suffered significantly higher risk of liver dysfunction (OR=1.99,95％ CI:1.66-2.37) and liver cirrhosis (OR=2.41,95％CI:1.90-3.04).Conclusion Patients with HCV/HIV in Dehong Prefecture coinfection had a higher risk for liver injury.
ABSTRACT
<p><b>OBJECTIVE</b>To study the HIV-1 genotypes and transmitted drug resistance (TDR) in Dehong prefecture of Yunnan province in 2013.</p><p><b>METHODS</b>Referring to the guidelines for HIV drug resistance threshold survey (HIVDR-TS), 54 plasma samples of recently reported HIV-infected individuals, aged between 16 and 25 years, were collected in Dehong prefecture from January to August 2013. Genotyping of partial pol gene was performed by using reverse transcriptional PCR. HIV-1 genotype. Prevalent levels of HIV-1 drug resistance transmission were analyzed.</p><p><b>RESULTS</b>Forty-eight plasma samples were successfully sequenced and analyzed. Among them, 45.8% were Chinese and the rest 54.2% were all Burmese. Based on pol sequences, identified HIV genotypes included subtype C (41.7%), URF (31.3%), CRF01_AE (12.5%), CRF07_BC (10.4%), CRF08_BC (2.1%) and subtype B (2.1%), C subtype appeared dominated in Chinese while URF was dominated in Burmese. One drug resistant mutation to non-nucleoside reverse transcriptase inhibitors (NNRTIs) was detected in one sequence from Burmese. Based on the statistical method of HIVDR-TS, the prevalence of transmitted HIV-1 drug resistance was adjusted as < 5%.</p><p><b>CONCLUSION</b>Diverse HIV-1 genotypes were found in this study, and the current HIV-1 drug resistant strains transmission was catalogued as at low prevalence level, in Dehong. To prevent the increase of the prevalence of transmitted HIV-1 drug resistance, standard treatment and scientific management for people living with HIV/AIDS should be strictly followed. Meanwhile, relevant surveillance, including drug resistance surveillance should also be performed among cross-border migrant population.</p>