Items where Author is "Abaasa, Andrew"
Number of items: 60.
2025
Effectiveness of COVID-19 vaccine against SARS-CoV-2 infection among symptomatic COVID-19 patients in Uganda. (2025)
Abaasa, Andrew M; Kusemererwa, Sylvia; Ankunda, Violet; Ongaria, Terry A; Nayiga, Bernadette; Kakande, Ayoub; Ssemwanga, Deogratius; Kimbugwe, Geofrey; Bosa, Henry K; Woldemariam, Yonas T; Kisakye, Annet; Humphreys, James; Worwui, Archibald K; Cohuet, Sandra; Mwenda, Jason M; Elliott, Alison M; Kaleebu, Pontiano; Ruzagira, Eugene
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Adherence to a Vaccination Schedule in a Simulated HIV Vaccine Efficacy Trial Among Adults in Fishing Communities Around Lake Victoria, Uganda. (2025)
Kalenge, Sharon Barbara Nabasumba; Abaasa, Andrew; Nakaweesi, Teddy; Biribawa, Victoria Menya; Nanvubya, Annet; Ssetaala, Ali; Mpendo, Juliet; Okech, Brenda; Price, Matt A; Bagaya, Bernard S; Kiwanuka, Noah
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Safety and Immunogenicity of a Modified Self-Amplifying Ribonucleic Acid (saRNA) Vaccine Encoding SARS-CoV-2 Spike Glycoprotein in SARS-CoV-2 Seronegative and Seropositive Ugandan Individuals. (2025)
Kitonsa, Jonathan; Serwanga, Jennifer; Cheeseman, Hannah M; Abaasa, Andrew; Lunkuse, Jane Frances; Ruzagira, Eugene; Kato, Laban; Nambaziira, Florence; Oluka, Gerald Kevin; Gombe, Ben; Jackson, Sembera; Ssebwana, Joseph Katende; McFarlane, Leon R; Joseph, Sarah; Pierce, Benjamin F; Shattock, Robin J; Kaleebu, Pontiano
COVID-19 vaccination status and associated factors among patients presenting with COVID-19-like symptoms in Uganda. (2025)
Kusemererwa, Sylvia; Ankunda, Violet; Ongaria, Terry A; Abaasa, Andrew; Kakande, Ayoub; Ssemwanga, Deogratius; Kimbugwe, Geofrey; Nayiga, Bernadette; Bosa, Henry K; Driwale, Alfred; Woldemariam, Yonas T; Kisakye, Annet; Humphreys, James; Worwui, Archibald K; Cohuet, Sandra; Mwenda, Jason M; Elliott, Alison M; Kaleebu, Pontiano; Ruzagira, Eugene
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The role of helminths and malaria in population differences in
vaccine responses. (2025)
Natukunda, A
2024
Associations between intravaginal practices and incidence of sexually transmitted infections and bacterial vaginosis among women enrolled in the dapivirine vaginal ring trial (The Ring Study) in southwestern Uganda: a retrospective secondary analysis. (2024)
Kusemererwa, Sylvia; Ruzagira, Eugene; Onyango, Martin; Kabarambi, Anita; Abaasa, Andrew
Next-Generation Sequencing Reveals a High Frequency of HIV-1 Minority Variants and an Expanded Drug Resistance Profile among Individuals on First-Line ART. (2024)
Nannyonjo, Maria; Omooja, Jonah; Bugembe, Daniel Lule; Bbosa, Nicholas; Lunkuse, Sandra; Nabirye, Stella Esther; Nassolo, Faridah; Namagembe, Hamidah; Abaasa, Andrew; Kazibwe, Anne; Kaleebu, Pontiano; Ssemwanga, Deogratius
Effectiveness of kangaroo mother care before clinical stabilisation versus standard care among neonates at five hospitals in Uganda (OMWaNA): a parallel-group, individually randomised controlled trial and economic evaluation. (2024)
Tumukunde, Victor; Medvedev, Melissa M; Tann, Cally J; Mambule, Ivan; Pitt, Catherine; Opondo, Charles; Kakande, Ayoub; Canter, Ruth; Haroon, Yiga; Kirabo-Nagemi, Charity; Abaasa, Andrew; Okot, Wilson; Katongole, Fredrick; Ssenyonga, Raymond; Niombi, Natalia; Nanyunja, Carol; Elbourne, Diana; Greco, Giulia; Ekirapa-Kiracho, Elizabeth; Nyirenda, Moffat; Allen, Elizabeth; Waiswa, Peter; Lawn, Joy E; OMWaNA Collaborative Authorship Group
2023
Feasibility and acceptability of using biometric fingerprinting to track migrations and support retention in HIV prevention research in fishing population in East Africa. (2023)
Abaasa, Andrew; Mee, Paul; Nanyonjo, Agnes; Easton, Sue; Tanser, Frank; Asiki, Gershim
Preferences for oral PrEP dosing among adolescent boys and young men in three sub-Saharan African countries. (2023)
Kakande, Ayoub; Ssemata, Andrew Sentoogo; Muhumuza, Richard; Atujuna, Millicent; Abaasa, Andrew; Ndekezi, Denis; Tshabalala, Gugulethu; Nematadzira, Teacler; Hornschuh, Stefanie; Nomvuyo, Mangxilana; Ahmed, Nadia; Maluadzi, Mamakiri; Anne Weiss, Helen; Webb, Emily; Stranix-Chibanda, Lynda; Janine Dietrich, Janan; Seeley, Janet; Fox, Julie
Thirty years of change in HIV incidence among adults in the Kyamulibwa General Population Cohort in rural southwest Uganda, 1989-2021. (2023)
Kasamba, Ivan; Mugisha, Joseph; Abaasa, Andrew; Makanga, Ronald; Ruzagira, Eugene; Kaleebu, Pontiano; Seeley, Janet; Newton, Robert; Kyamulibwa General Population Cohort team of Medical Research Co
"I fear those things": non-uptake of contraceptives, and barriers to use among adolescent girls and young women at high risk of HIV infection in Kampala, Uganda. (2023)
Kawuma, Rachel; Lunkuse, Jane Frances; Ssembajjwe, Wilber; Kayesu, Ivy; Price, Matt A; Brickley, Debbie B; Abaasa, Andrew; Mayanja, Yunia
A phase I COVID-19 vaccine trial among SARS-CoV-2 seronegative and seropositive individuals in Uganda utilizing a self-amplifying RNA vaccine platform: Screening and enrollment experiences. (2023)
Kitonsa, Jonathan; Kamacooko, Onesmus; Ruzagira, Eugene; Nambaziira, Florence; Abaasa, Andrew; Serwanga, Jennifer; Gombe, Ben; Lunkuse, Jane; Naluyinda, Hadijah; Tukamwesiga, Naboth; Namata, Tamara; Kigozi, Antony; Kafeero, Paddy; Basajja, Vincent; Joseph, Sarah; Pierce, Benjamin F; Shattock, Robin; Kaleebu, Pontiano
Effect of the "universal test and treat" policy on the characteristics of persons registering for HIV care and initiating antiretroviral therapy in Uganda. (2023)
Mugenyi, Levicatus; Hansen, Christian H; Mayaud, Philippe; Seeley, Janet; Newton, Robert; Nanfuka, Mastula; Abaasa, Andrew; Mugisha, Kenneth; Etukoit, Michael; Kaleebu, Pontiano; Ruzagira, Eugene
2022
Risk factors for Crimean-Congo Haemorrhagic Fever (CCHF) virus exposure in farming communities in Uganda. (2022)
Atim, Stella A; Ashraf, Shirin; Belij-Rammerstorfer, Sandra; Ademun, Anna R; Vudriko, Patrick; Nakayiki, Teddy; Niebel, Marc; Shepherd, James; Balinandi, Stephen; Nakanjako, Gladys; Abaasa, Andrew; Johnson, Paul CD; Odongo, Steven; Esau, Martin; Bahati, Milton; Kaleebu, Pontiano; Lutwama, Julius J; Masembe, Charles; Lambe, Teresa; Thomson, Emma C; Tweyongyere, Robert
Determinants and reasons for switching anti-retroviral regimen among HIV-infected youth in a large township of South Africa (2002-2019). (2022)
Kabarambi, Anita; Balinda, Sheila; Abaasa, Andrew; Cogill, Dolphina; Orrell, Catherine
Feasibility of conducting HIV prevention trials among key populations in Nairobi, Kenya. (2022)
Mutisya, Elizabeth Mueni; Muturi-Kioi, Vincent; Abaasa, Andrew; Nyasani, Delvin; Kabuti, Rhoda W; Lunani, Laura; Kotikot, Timothy; Mundia, Moses; Mutua, Gaudensia; Ombati, Geoffrey; Nduta, Hannah; Price, Matt A; Kimani, Joshua; Anzala, Aggrey Omu
Factors associated with consistent condom use in Ugandan fishing communities' cohort. (2022)
Nakazibwe, Hope Grania; Muturi-Kioi, Vincent; Abaasa, Andrew; Kibengo, Freddie; Hughes, Peter; Price, Matt
Evaluating the effectiveness of enhanced family planning education on knowledge and use of family planning in fishing communities of Lake Victoria in Uganda: a randomized controlled trial. (2022)
Nanvubya, Annet; Wanyenze, Rhoda K; Abaasa, Andrew; Nakaweesa, Teddy; Mpendo, Juliet; Kawoozo, Barbarah; Matovu, Francis; Nabukalu, Sarah; Omoding, Geoffrey; Kaweesi, Jed; Ndugga, John; Bagaya, Bernard; Chinyenze, Kundai; Price, Matt A; Van Geertruyden, Jean Pierre
2021
Use of propensity score matching to create counterfactual group to assess potential HIV prevention interventions. (2021)
Abaasa, Andrew; Mayanja, Yunia; Asiki, Gershim; Price, Matt A; Fast, Patricia E; Ruzagira, Eugene; Kaleebu, Pontiano; Todd, Jim
Use of Virtual Reality Distraction to Reduce Child Pain and Fear during Painful Medical Procedures in Children with Physical Disabilities in Uganda: A Feasibility Study. (2021)
Bannink Mbazzi, Femke; Nimusiima, Claire; Akellot, Daniella; Kawesa, Elizabeth; Abaasa, Andrew; Hodges, Sarah; Seeley, Janet; Vervoort, Tine
Assessment of risk compensation following use of the dapivirine vaginal ring in southwestern Uganda. (2021)
Kusemererwa, Sylvia; Abaasa, Andrew; Kabarambi, Anita; Onyango, Martin; Mugisha, Joseph Okello
Prevalence and factors associated with hypertension among people living with HIV/AIDS on antiretroviral therapy in Uganda. (2021)
Lubega, Gloria; Mayanja, Billy; Lutaakome, Joseph; Abaasa, Andrew; Thomson, Rebecca; Lindan, Christina
Abortion and its correlates among female fisherfolk along Lake Victoria in Uganda. (2021)
Nanvubya, Annet; Matovu, Francis; Abaasa, Andrew; Mayanja, Yunia; Nakaweesa, Teddy; Mpendo, Juliet; Kawoozo, Barbarah; Chinyenze, Kundai; Price, Matt A; Wanyenze, Rhoda; Geertruyden, Jean Pierre Van
2020
Using observational cohort data from Key populations to plan HIV intervention studies. (2020)
Abaasa, AM
Comparison of HIV Risk Behaviors Between Clinical Trials and Observational Cohorts in Uganda. (2020)
Abaasa, Andrew; Nash, Stephen; Mayanja, Yunia; Price, Matt A; Fast, Patricia E; Kaleebu, Pontiano; Todd, Jim
Comparison of retention in observational cohorts and nested simulated HIV vaccine efficacy trials in the key populations in Uganda. (2020)
Abaasa, Andrew; Todd, Jim; Nash, Stephen; Mayanja, Yunia; Kaleebu, Pontiano; Fast, Patricia E; Price, Matt
Feasibility of establishing an HIV vaccine preparedness cohort in a population of the Uganda Police Force: Lessons learnt from a prospective study. (2020)
Bahemuka, Ubaldo Mushabe; Abaasa, Andrew; Seeley, Janet; Byaruhanga, Moses; Kamali, Anatoli; Mayaud, Philippe; Kuteesa, Monica
Willingness of female sex workers in Kampala, Uganda to participate in future HIV vaccine trials: a case control study. (2020)
Mayanja, Yunia; Abaasa, Andrew; Namale, Gertrude; Price, Matt A; Kamali, Anatoli
Uptake of long acting reversible contraception following integrated couples HIV and fertility goal-based family planning counselling in Catholic and non-Catholic, urban and rural government health centers in Kigali, Rwanda. (2020)
Mukamuyango, Jeannine; Ingabire, Rosine; Parker, Rachel; Nyombayire, Julien; Abaasa, Andrew; Asiki, Gershim; Easter, Sarah Rae; Wall, Kristin M; Nyirazinyoye, Laetitia; Tichacek, Amanda; Kaslow, Nadine; Price, Matt A; Allen, Susan; Karita, Etienne
Willingness to participate in future HIV vaccine trials among men who have sex with men and female sex workers living in Nairobi, Kenya. (2020)
Mutisya, Elizabeth Mueni; Mutua, Gaudensia; Nyasani, Delvin; Nduta, Hannah; Kabuti, Rhoda W; Muturi-Kioi, Vincent; Omosa-Manyonyi, Gloria; Abaasa, Andrew; Lindan, Krysia; Price, Matt A; Kimani, Joshua; Anzala, Aggrey Omu
2019
Effect of high-intensity versus low-intensity praziquantel treatment on HIV disease progression in HIV and Schistosoma mansoni co-infected patients: a randomised controlled trial. (2019)
Abaasa, Andrew; Asiki, Gershim; Obuku Ekii, Andrew; Wanyenze, Josephine; Pala, Pietro; J van Dam, Govert; Corstjens, Paul LAM; Hughes, Peter; Ding, Song; Pantaleo, Giuseppe; Kaleebu, Pontiano; Elliott, Alison M; Kamali, Anatoli
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Simulated vaccine efficacy trials to estimate HIV incidence for actual vaccine clinical trials in key populations in Uganda. (2019)
Abaasa, Andrew; Nash, Stephen; Mayanja, Yunia; Price, Matt; Fast, Patricia E; Kamali, Anatoli; Kaleebu, Pontiano; Todd, Jim
Use of reliable contraceptives and its correlates among women participating in Simulated HIV vaccine efficacy trials in key-populations in Uganda. (2019)
Abaasa, Andrew; Todd, Jim; Mayanja, Yunia; Price, Matt; Fast, Patricia E; Kaleebu, Pontiano; Nash, Stephen
Retention of adults from fishing communities in an HIV vaccine preparedness study in Masaka, Uganda. (2019)
Bahemuka, Ubaldo Mushabe; Abaasa, Andrew; Ruzagira, Eugene; Lindan, Christina; Price, Matt A; Kamali, Anatoli; Fast, Pat
Feasibility of conducting HIV combination prevention interventions in fishing communities in Uganda: A pilot cluster randomised trial. (2019)
Kuteesa, Monica O; Weiss, Helen A; Abaasa, Andrew; Nash, Stephen; Nsubuga, Rebecca N; Newton, Rob; Seeley, Janet; Kamali, Anatoli
Effect of Stopping Cotrimoxazole Preventive Therapy on Microbial Translocation and Inflammatory Markers Among Human Immunodeficiency Virus-Infected Ugandan Adults on Antiretroviral Therapy: The COSTOP Trial Immunology Substudy. (2019)
Kyosiimire-Lugemwa, Jacqueline; Anywaine, Zacchaeus; Abaasa, Andrew; Levin, Jonathan; Gombe, Ben; Musinguzi, Kenneth; Kaleebu, Pontiano; Grosskurth, Heiner; Munderi, Paula; Pala, Pietro
Factors associated with vaccination completion and retention among HIV negative female sex workers enrolled in a simulated vaccine efficacy trial in Kampala, Uganda. (2019)
Mayanja, Yunia; Abaasa, Andrew; Namale, Gertrude; Asiki, Gershim; Price, Matthew A; Kamali, Anatoli
Sustained virological response and drug resistance among female sex workers living with HIV on antiretroviral therapy in Kampala, Uganda: a cross-sectional study. (2019)
Namale, Gertrude; Kamacooko, Onesmus; Bagiire, Daniel; Mayanja, Yunia; Abaasa, Andrew; Kilembe, William; Price, Matt; Ssemwanga, Deogratius; Lunkuse, Sandra; Nanyonjo, Maria; Ssenyonga, William; Mayaud, Philippe; Newton, Rob; Kaleebu, Pontiano; Seeley, Janet
2018
Effect of high-intensity versus low-intensity praziquantel treatment on HIV disease progression in HIV and Schistosoma mansoni co-infected patients: a randomised controlled trial. (2018)
Abaasa, Andrew; Asiki, Gershim; Obuku Ekii, Andrew; Wanyenze, Josephine; Pala, Pietro; J van Dam, Govert; Corstjens, Paul LAM; Hughes, Peter; Ding, Song; Pantaleo, Giuseppe; Kaleebu, Pontiano; Elliott, Alison M; Kamali, Anatoli
Effect of high-intensity versus low-intensity praziquantel treatment on HIV disease progression in HIV and Schistosoma mansoni co-infected patients: a randomised controlled trial. (2018)
Abaasa, Andrew; Asiki, Gershim; Obuku Ekii, Andrew; Wanyenze, Josephine; Pala, Pietro; J. van Dam, Govert; L.A.M. Corstjens, Paul; Hughes, Peter; Ding, Song; Pantaleo, Giuseppe; Kaleebu, Pontiano; M. Elliott, Alison; Kamali, Anatoli
Utility of Different Adherence Measures for PrEP: Patterns and Incremental Value. (2018)
Abaasa, Andrew; Hendrix, Craig; Gandhi, Monica; Anderson, Peter; Kamali, Anatoli; Kibengo, Freddie; Sanders, Eduard J; Mutua, Gaudensia; Bumpus, Namandjé N; Priddy, Frances; Haberer, Jessica E
Discontinuing cotrimoxazole preventive therapy in HIV-infected adults who are stable on antiretroviral treatment in Uganda (COSTOP): A randomised placebo controlled trial. (2018)
Anywaine, Zacchaeus; Levin, Jonathan; Kasirye, Ronnie; Lutaakome, Joseph Kayiira; Abaasa, Andrew; Nunn, Andrew; Grosskurth, Heiner; Munderi, Paula; COSTOP research team
Contraceptive Preference Among Women at Risk of HIV Acquisition in a Preparatory Screening Study for a Phase III Microbicide Trial in South Western Uganda. (2018)
Kusemererwa, Sylvia; Abaasa, Andrew; Onyango, Martin; Nel, Annalene M; Isaacs, Michelle; Asiki, Gershim
Prevalence and Factors Associated with Contraceptive Use Among Kenyan Women Aged 15-49 Years. (2018)
Lunani, Laura L; Abaasa, Andrew; Omosa-Manyonyi, Gloria
The validity of an area-based method to estimate the size of hard-to-reach populations using satellite images: the example of fishing populations of Lake Victoria. (2018)
Nash, Stephen; Tittle, Victoria; Abaasa, Andrew; Sanya, Richard E; Asiki, Gershim; Hansen, Christian Holm; Grosskurth, Heiner; Kapiga, Saidi; Grundy, Chris; Lake Victoria Consortium for Health Research
2017
Uptake of hormonal contraceptives and correlates of uptake in a phase III clinical trial in rural South Western Uganda. (2017)
Abaasa, Andrew; Gafos, Mitzy; Anywaine, Zacchaeus; Nunn, Andrew; Crook, Angela; Levin, Jonathan; McCormack, Sheena; Kamali, Anatoli
Assessment of quality of care among in-patients with postpartum haemorrhage and severe pre-eclampsia at st. Francis hospital nsambya: a criteria-based audit. (2017)
Lumala, Alfred; Sekweyama, Peter; Abaasa, Andrew; Lwanga, Humphrey; Byaruhanga, Romano
2016
Exit interviews administered to patients participating in the COSTOP placebo controlled randomised trial in Uganda. (2016)
Nunn, Andrew; Anywaine, Zacchaeus; Seeley, Janet; Munderi, Paula; Levin, Jonathan; Kasirye, Ronnie; Kamali, Anatoli; Abaasa, Andrew; Grosskurth, Heiner
Effect of Schistosoma mansoni Infection on Innate and HIV-1-Specific T-Cell Immune Responses in HIV-1-Infected Ugandan Fisher Folk. (2016)
Obuku, Andrew Ekii; Asiki, Gershim; Abaasa, Andrew; Ssonko, Isaac; Harari, Alexandre; van Dam, Govert J; Corstjens, Paul L; Joloba, Moses; Ding, Song; Mpendo, Juliet; Nielsen, Leslie; Kamali, Anatoli; Elliott, Alison M; Pantaleo, Giuseppe; Kaleebu, Pontiano; Pala, Pietro
2015
Factors associated with dropout in a long term observational cohort of fishing communities around lake Victoria, Uganda. (2015)
Abaasa, Andrew; Asiki, Gershim; Mpendo, Juliet; Levin, Jonathan; Seeley, Janet; Nielsen, Leslie; Ssetaala, Ali; Nanvubya, Annet; De Bont, Jan; Kaleebu, Pontiano; Kamali, Anatoli
Safety of discontinuing cotrimoxazole prophylaxis among HIV infected adults on anti-retroviral therapy in Uganda (COSTOP trial): Design. (2015)
Anywaine, Zacchaeus; Abaasa, Andrew; Levin, Jonathan; Kasirye, Ronnie; Kamali, Anatoli; Grosskurth, Heiner; Munderi, Paula; Nunn, Andrew
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2014
A pilot study to evaluate aflatoxin exposure in a rural Ugandan population. (2014)
Asiki, Gershim; Seeley, Janet; Srey, Chou; Baisley, Kathy; Lightfoot, Tracy; Archileo, Kaaya; Agol, Dorice; Abaasa, Andrew; Wakeham, Katie; Routledge, Michael N; Wild, Christopher P; Newton, Robert; Gong, Yun Yun
2013
Long-term consistent use of a vaginal microbicide gel among HIV-1 sero-discordant couples in a phase III clinical trial (MDP 301) in rural south-west Uganda. (2013)
Abaasa, Andrew; Crook, Angela; Gafos, Mitzy; Anywaine, Zacchaeus; Levin, Jonathan; Wandiembe, Symon; Nanoo, Ananta; Nunn, Andrew; McCormack, Sheena; Hayes, Richard; Kamali, Anatoli
Willingness to participate in HIV vaccine efficacy trials among high risk men and women from fishing communities along Lake Victoria in Uganda. (2013)
Asiki, Gershim; Abaasa, Andrew; Ruzagira, Eugene; Kibengo, Freddie; Bahemuka, Ubaldo; Mulondo, Jerry; Seeley, Janet; Bekker, Linda-Gail; Delany, Sinead; Kaleebu, Pontiano; Kamali, Anatoli
2012
High HIV incidence and socio-behavioral risk patterns in fishing communities on the shores of Lake Victoria, Uganda. (2012)
Seeley, Janet; Nakiyingi-Miiro, Jessica; Kamali, Anatoli; Mpendo, Juliet; Asiki, Gershim; Abaasa, Andrew; De Bont, Jan; Nielsen, Leslie; Kaleebu, Pontiano; CHIVTUM Study Team
2011
HIV and syphilis prevalence and associated risk factors among fishing communities of Lake Victoria, Uganda. (2011)
Asiki, Gershim; Mpendo, Juliet; Abaasa, Andrew; Agaba, Collins; Nanvubya, Annet; Nielsen, Leslie; Seeley, Janet; Kaleebu, Pontiano; Grosskurth, Heiner; Kamali, Anatoli
HIV incidence and risk factors for acquisition in HIV discordant couples in Masaka, Uganda: an HIV vaccine preparedness study. (2011)
Ruzagira, Eugene; Wandiembe, Symon; Abaasa, Andrew; Bwanika, Agnes N; Bahemuka, Ubaldo; Amornkul, Pauli; Price, Matthew A; Grosskurth, Heiner; Kamali, Anatoli
2010
Haematological and biochemistry laboratory abnormalities associated with splenomegaly in asymptomatic adults in Masaka, Uganda: implications for HIV biomedical prevention trials. (2010)
Ruzagira, Eugene; Abaasa, Andrew; Levin, Jonathan; Bahemuka, Ubaldo; Bwanika, Agnes; Amornkul, Pauli N; Price, Matthew A; Grosskurth, Heiner; Kamali, Anatoli