Quantifying rates of HIV-1 flow between risk groups and geographic locations in Kenya : A country-wide phylogenetic study
(2022) In Virus Evolution 8(1).- Abstract
In Kenya, HIV-1 key populations including men having sex with men (MSM), people who inject drugs (PWID) and female sex workers (FSW) are thought to significantly contribute to HIV-1 transmission in the wider, mostly heterosexual (HET) HIV-1 transmission network. However, clear data on HIV-1 transmission dynamics within and between these groups are limited. We aimed to empirically quantify rates of HIV-1 flow between key populations and the HET population, as well as between different geographic regions to determine HIV-1 'hotspots' and their contribution to HIV-1 transmission in Kenya. We used maximum-likelihood phylogenetic and Bayesian inference to analyse 4058 HIV-1 pol sequences (representing 0.3 per cent of the epidemic in Kenya)... (More)
In Kenya, HIV-1 key populations including men having sex with men (MSM), people who inject drugs (PWID) and female sex workers (FSW) are thought to significantly contribute to HIV-1 transmission in the wider, mostly heterosexual (HET) HIV-1 transmission network. However, clear data on HIV-1 transmission dynamics within and between these groups are limited. We aimed to empirically quantify rates of HIV-1 flow between key populations and the HET population, as well as between different geographic regions to determine HIV-1 'hotspots' and their contribution to HIV-1 transmission in Kenya. We used maximum-likelihood phylogenetic and Bayesian inference to analyse 4058 HIV-1 pol sequences (representing 0.3 per cent of the epidemic in Kenya) sampled 1986-2019 from individuals of different risk groups and regions in Kenya. We found 89 per cent within-risk group transmission and 11 per cent mixing between risk groups, cyclic HIV-1 exchange between adjoining geographic provinces and strong evidence of HIV-1 dissemination from (i) West-to-East (i.e. higher-to-lower HIV-1 prevalence regions), and (ii) heterosexual-to-key populations. Low HIV-1 prevalence regions and key populations are sinks rather than major sources of HIV-1 transmission in Kenya. Targeting key populations in Kenya needs to occur concurrently with strengthening interventions in the general epidemic.
(Less)
- author
- organization
- publishing date
- 2022
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- HIV-1, key populations, molecular epidemiology, transmission
- in
- Virus Evolution
- volume
- 8
- issue
- 1
- article number
- veac016
- publisher
- Oxford University Press
- external identifiers
-
- pmid:35356640
- scopus:85128223907
- ISSN
- 2057-1577
- DOI
- 10.1093/ve/veac016
- language
- English
- LU publication?
- yes
- id
- 241af742-03ae-4ae6-b984-a0316603cafe
- date added to LUP
- 2022-07-06 14:48:10
- date last changed
- 2025-02-07 10:22:53
@article{241af742-03ae-4ae6-b984-a0316603cafe, abstract = {{<p>In Kenya, HIV-1 key populations including men having sex with men (MSM), people who inject drugs (PWID) and female sex workers (FSW) are thought to significantly contribute to HIV-1 transmission in the wider, mostly heterosexual (HET) HIV-1 transmission network. However, clear data on HIV-1 transmission dynamics within and between these groups are limited. We aimed to empirically quantify rates of HIV-1 flow between key populations and the HET population, as well as between different geographic regions to determine HIV-1 'hotspots' and their contribution to HIV-1 transmission in Kenya. We used maximum-likelihood phylogenetic and Bayesian inference to analyse 4058 HIV-1 pol sequences (representing 0.3 per cent of the epidemic in Kenya) sampled 1986-2019 from individuals of different risk groups and regions in Kenya. We found 89 per cent within-risk group transmission and 11 per cent mixing between risk groups, cyclic HIV-1 exchange between adjoining geographic provinces and strong evidence of HIV-1 dissemination from (i) West-to-East (i.e. higher-to-lower HIV-1 prevalence regions), and (ii) heterosexual-to-key populations. Low HIV-1 prevalence regions and key populations are sinks rather than major sources of HIV-1 transmission in Kenya. Targeting key populations in Kenya needs to occur concurrently with strengthening interventions in the general epidemic. </p>}}, author = {{Nduva, George M. and Otieno, Frederick and Kimani, Joshua and Wahome, Elizabeth and McKinnon, Lyle R. and Cholette, Francois and Majiwa, Maxwell and Masika, Moses and Mutua, Gaudensia and Anzala, Omu and Graham, Susan M. and Gelmon, Larry and Price, Matt A. and Smith, Adrian D. and Bailey, Robert C. and Baele, Guy and Lemey, Philippe and Hassan, Amin S. and Sanders, Eduard J. and Esbjörnsson, Joakim}}, issn = {{2057-1577}}, keywords = {{HIV-1; key populations; molecular epidemiology; transmission}}, language = {{eng}}, number = {{1}}, publisher = {{Oxford University Press}}, series = {{Virus Evolution}}, title = {{Quantifying rates of HIV-1 flow between risk groups and geographic locations in Kenya : A country-wide phylogenetic study}}, url = {{http://dx.doi.org/10.1093/ve/veac016}}, doi = {{10.1093/ve/veac016}}, volume = {{8}}, year = {{2022}}, }