Publications by authors named "Musyoki Helgar"

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Programmatic mapping and estimating the population size of female sex workers, men who have sex with men, people who inject drugs and transgender populations in Kenya.
Janet Musimbi, Helgar Musyoki, Mary Mugambi, Shem Kaosa, Japheth Kioko

Gates Open Res· July 2025

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Impact of scaling up harm reduction interventions on injecting risk behaviours, ART outcomes and HIV incidence among people who inject drugs in Kenya.
Josephine G Walker, Matthew J Akiyama, Adelina Artenie, Charles M Cleland, John A Lizcano, Helgar Musyoki

Int J Drug Policy· June 2025

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Describing the effect of COVID-19 on sexual and healthcare-seeking behaviours of men who have sex with men in three counties in Kenya: a cross-sectional study.
Souradet Y Shaw, Jeffery C S Biegun, Stella Leung, Shajy Isac, Helgar K Musyoki

Sex Transm Infect· November 2024

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HIV phylogenetic clusters point to unmet hiv prevention, testing and treatment needs among men who have sex with men in kenya.
François Cholette, Lisa Lazarus, Pascal Macharia, Jeffrey Walimbwa, Samuel Kuria, Helgar Musyoki

BMC Infect Dis· November 2024

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Exploratory analysis of the potential impact of violence on HIV among female sex workers in Mombasa, Kenya: a mathematical modelling study.
Michael Pickles, Elisa Mountain, Parinita Bhattacharjee, Japheth Kioko, Janet Musimbi, Helgar Musyoki

BMC Med· October 2024

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Experience and challenges delivering hepatitis C virus treatment for people who inject drugs in Kenya.
Joyce Boke, Aliza Monroe-Wise, Grace Umutesi, Loice Mbogo, Betsy Sambai, Helgar Musyoki

Front Med (Lausanne)· October 2024

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"We only trust each other": A qualitative study exploring the overdose risk environment among persons who inject drugs living with HIV in Nairobi, Kenya.
Megan Maurano, David Bukusi, Sarah Masyuko, Rose Bosire, Esther Gitau, Helgar Musyoki

PLOS Glob Public Health· July 2024

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Applying the Effective Programme Coverage framework to assess gaps in HIV prevention programmes for female sex workers and men who have sex with men in Nairobi, Kenya: findings from an expanded Polling Booth Survey.
Parinita Bhattacharjee, Leigh McClarty, Shajy Isac, Joshua Kimani, Faran Emmanuel, Helgar Musyoki

J Int AIDS Soc· July 2024

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A sub-national HIV epidemic appraisal in Kenya: a new approach for identifying priority geographies, populations and programmes for optimizing coverage for HIV prevention.
Ramesh Banadakoppa Manjappa, Parinita Bhattacharjee, Souradet Yuh-Nan Shaw, Joshua Gitonga, Japheth Kioko, Helgar Musyoki

J Int AIDS Soc· July 2024

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Expanding options for HIV testing: A process evaluation of a community-led HIV self-testing intervention among men who have sex with men in Kenya.
Memory Melon, Bernadette Kombo, Mary Mugambi, Margaret Njiraini, Kennedy Olango, Helgar Musyoki

Gates Open Res· July 2024

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Differential Burden of HIV Among Adolescent Girls and Young Women by Places Associated With Sex Work: An Observational Study in Mombasa, Kenya.
Marissa Becker, Sharmistha Mishra, Parinita Bhattacharjee, Helgar Musyoki, Aruni Tennakoon

J Acquir Immune Defic Syndr· June 2024

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Assessing Outcomes in HIV Prevention and Treatment Programs With Female Sex Workers and Men Who Have Sex With Men: Expanded Polling Booth Survey Protocol.
Parinita Bhattacharjee, Leigh M McClarty, Joshua Kimani, Shajy Isac, Rhoda Wanjiru Kabuti, Helgar Musyoki

JMIR Public Health Surveill· June 2024

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Efficacy of assisted partner services for people who inject drugs in Kenya to identify partners living with HIV and hepatitis C virus infection: a prospective cohort study.
Aliza Monroe-Wise, Loice Mbogo, Betsy Sambai, Natasha Ludwig-Barron, Brandon L Guthrie, Helgar Musyoki

Lancet Glob Health· May 2024

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Assessing awareness and use of HIV self-testing kits after the introduction of a community-based HIV self-testing programme among men who have sex with men in Kenya.
Souradet Y Shaw, Stella Leung, Shajy Isac, Helgar Musyoki, Mary Mugambi

PLOS Glob Public Health· August 2023

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Changes in context, typology and programme outcomes between early and recent periods of sex work among young female sex workers in Mombasa, Kenya: A cross-sectional study.
Parinita Bhattacharjee, Shajy Isac, Helgar Musyoki, Peter Gichangi, Huiting Ma

PLoS One· July 2023

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HIV acquisition prior to entry into formal sex work: inference from next-generation viral sequencing.
Bronwyn Neufeld, François Cholette, Paul Sandstrom, Helgar Musyoki, Huiting Ma

AIDS· May 2023

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Predictors of hepatitis C cure among people who inject drugs treated with directly observed therapy supported by peer case managers in Kenya.
Matthew J Akiyama, Lindsey R Riback, Mercy Nyakowa, Helgar Musyoki, John A Lizcano

Int J Drug Policy· March 2023

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Challenges and best practices for hepatitis C care among people who inject drugs in resource limited settings: focus group discussions with healthcare providers in Kenya.
Rie Seu, Lindsey R Riback, Mercy Nyakowa, John Lizcano, Helgar Musyoki

Glob Public Health· December 2022

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Modelling the impact of HIV and hepatitis C virus prevention and treatment interventions among people who inject drugs in Kenya.
Jack Stone, Hannah Fraser, Josephine G Walker, Nyashadzaishe Mafirakureva, Bernard Mundia, Helgar Musyoki

AIDS· December 2022

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Occupational roles and risks of community-embedded peer educators providing HIV, hepatitis C and harm reduction services to persons who inject drugs in Nairobi, Kenya.
Linnet N Masese, Natasha T Ludwig-Barron, Loice Mbogo, Brandon L Guthrie, Helgar Musyoki

PLoS One· December 2022

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HIV prevention programme with young women who sell sex in Mombasa, Kenya: learnings for scale-up.
Parinita Bhattacharjee, Abednego Musau, Griffins Manguro, Patricia Ongwen, Jane Mutegi, Helgar Musyoki

J Int AIDS Soc· August 2022

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Impact of COVID-19 on substance use disorder treatment services in Kenya: Qualitative findings from healthcare providers.
Abbe Muller, Matthew J Akiyama, Lindsey Riback, Mercy Nyakowa, Helgar Musyoki

Int J Drug Policy· July 2022

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Differences in HIV, STI and Other Risk Factors Among Younger and Older Male Sex Workers Who Have Sex With Men in Nairobi, Kenya.
Nicholas Muraguri, Jerry O Okal, Marleen Temmerman, Dunstan Mukoko, Helgar K Musyoki

Front Reprod Health· July 2022

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Validity and reliability of the Neilands sexual stigma scale among Kenyan gay, bisexual, and other men who have sex with men.
Christine J Korhonen, Brian P Flaherty, Elizabeth Wahome, Pascal Macharia, Helgar Musyoki

BMC Public Health· April 2022

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Understanding socio-sexual networks: critical consideration for HIVST intervention planning among men who have sex with men in Kenya.
Lisa Lazarus, Ravi Prakash, Bernadette K Kombo, Matthew Thomann, Kennedy Olango, Helgar Musyoki

BMC Public Health· March 2022

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