Molecular genetics and epidemiological characteristics of HIV-1 epidemic strains in various sexual risk behaviour groups in developed Eastern China, 2017–2020
Emerging Microbes & Infections·
- DOI
- 10.1080/22221751.2022.2119167
- PMID
- 36032035
- PMCID
- PMC9542350
- OpenAlex
- W4293406963
- Study type
- Genomic study
- Publisher
- Informa UK Limited
- Article type
- journal-article
- Integrity
- current
Why this research matters now
The findings identify CRF07_BC-infected individuals as key epidemic drivers and emphasize the need for targeted interventions on key clusters and individuals to block continued HIV-1 transmission across sexual risk groups.
Structured evidence summary
Research question
The study examined molecular epidemiological patterns and transmission dynamics of HIV-1 epidemic strains across different sexual risk behavior groups in a developed region of eastern China during 2017–2020.
Study design
Molecular epidemiological analysis using phylogenetic inference, molecular transmission network construction, and Bayesian analyses on pol gene sequences from newly diagnosed HIV-1-positive patients.
Population and setting
A total of 1083 newly diagnosed HIV-1-positive patients from Jiaxing city in developed eastern China, sampled between 2017 and 2020, representing various sexual risk groups including men who have sex with men (MSM) and heterosexual individuals.
Main findings
Thirteen HIV-1 subtypes were identified, with CRF07_BC (36.10%) and CRF01_AE (34.63%) predominating. Nearly 45% of individuals formed 146 transmission clusters, with CRF07_BC showing extensive clustering driven by MSM in larger networks while CRF01_AE formed smaller clusters across risk groups. The MSM group infected with CRF07_BC had notable transmission impact on non-commercial heterosexual groups. Bayesian analysis confirmed multiple introductions of CRF07_BC from other provinces with rapid spread among MSM and heterosexual populations.
Public-health relevance
The findings identify CRF07_BC-infected individuals as key epidemic drivers and emphasize the need for targeted interventions on key clusters and individuals to block continued HIV-1 transmission across sexual risk groups.
Important limitations
This summary relies on the supplied single-article abstract and metadata. A complete assessment of study limitations, including sampling methodology, sequence coverage, temporal representativeness, and generalizability beyond Jiaxing city, requires access to the full published article.
GIDS interpretation
The article is discoverable in GIDS through classifier links to AIDS, China, genomic epidemiology, transmission dynamics, and treatment topics. It provides molecular epidemiological context for understanding HIV-1 subtype distribution and transmission patterns in eastern China but does not constitute surveillance data or confirm an active public health signal.
Related GIDS surveillance
Literature context does not validate, explain, or change a surveillance signal. Exact and contextual relationships are shown separately.
Evidence relationships
This article has 10 auditable classifier relationships to diseases, places, topics, and study design.