HIV genotypes and molecular transmission networks among MSM with newly reported HIV infections in Dehong Prefecture， Yunnan Province from 2010 to 2019
10.19428/j.cnki.sjpm.2023.23380
- VernacularTitle:2010—2019年云南省德宏州新报告男男性行为HIV感染者病毒基因亚型分子传播网络分析
- Author:
Xing DUAN
1
;
Xinyue LIANG
2
;
Jibao WANG
1
;
Jin YANG
1
;
Yikui WANG
1
;
Yulong YANG
2
;
Sujuan ZHOU
2
;
Tao YANG
1
;
Yuecheng YANG
1
;
Renhai TANG
1
;
Runhua YE
1
;
Yingying DING
2
;
Na HE
2
;
Song DUAN
1
Author Information
1. Department of AIDS and STD Prevention and Control， Dehong Dai and Jingpo Autonomous Prefecture Center for Disease Control and Prevention， Mangshi， Yunnan 678400， China
2. School of Public Health， Fudan University， Ministry of Public Health and Safety Education Key， Shanghai 200032， China
- Publication Type:Journal Article
- Keywords:
human immunodeficiency virus;
men who have sex with men;
genotype;
molecular transmission network
- From:
Shanghai Journal of Preventive Medicine
2023;35(12):1168-1174
- CountryChina
- Language:Chinese
-
Abstract:
ObjectiveThis study aimed to investigate the HIV genotypic subtypes and molecular transmission clusters among men who have sex with men （MSM） with newly reported HIV infections in Dehong Dai and Jingpo Autonomous Prefecture （Dehong Prefecture）， Yunnan Province， China， between 2010 and 2019. The study aimed to identify potential high-risk transmitters and provide reference data for screening， management， and intervention of infection sources. MethodsPlasma samples from newly reported HIV-positive MSM individuals in Dehong Prefecture between 2010 and 2019 were collected. The viral pol gene fragments were amplified， sequenced， and genotyped. Genetic distances （GD） between pairwise sequences were analyzed and calculated. MEGA 7.0 and Gephi were used for phylogenetic and molecular transmission network analysis. ResultsA total of 159 newly reported HIV infections among MSM were included in the study， with successful genotyping of 100 cases. Nine HIV-1 subtypes were identified， with the most prevalent being CRF01_AE subtype （52%）， followed by CRF07_BC subtype （31%）， CRF55_01B subtype （10%）， and others （7%）. Cluster analysis revealed a total network access rate of 67%， forming three transmission clusters. CRF01_AE subtype formed two transmission clusters with 38 and 3 infected individuals， while CRF07_BC subtypes formed one transmission cluster with 26 infected individuals. The transmission network within the CRF01_AE clusters exhibited a more complex relationship. Significant differences in educational level were observed between the two main transmission clusters. ConclusionThe predominant HIV subtypes among newly reported MSM cases in Dehong Prefecture between 2010 and 2019 were CRF01_AE and CRF07_BC. Significant cultural differences are observed between the main transmission clusters. Continued monitoring of genotypic subtypes and targeted interventions within transmission clusters are warranted.
