Melissa  Mugambi

Dr. Melissa Mugambi


Research Focus & Metrics

Academic Career Length

10Years (2017-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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16 November 2018 in BMJ Global Health
Verified
Journal Article
Open access
PDF file
MMelissa Mugambi
Melissa Mugambi
TPTrevor Peter
Trevor Peter
SMSamuel F Martins
Samuel F Martins
CGCristina Giachetti
Cristina Giachetti
Diagnostics developers often face challenges introducing in-vitro diagnostic (IVD) products to low- and middle-income countries (LMICs) because of difficulty in accessing robust market data, navigating policy and regulatory requirements and implementing and supporting products in healthcare systems with limited infrastructure. Best practices recommend the use of a phase-gate model with defined activities and milestones by phase to successfully move a product from concept to commercialisation. While activities for commercialisation of products in high-income countries (HICs) are well understood, the activities required for introduction of IVDs in LMICs are not. In this paper, we identify the key activities needed for IVD product development and implementation and map them to the various phases of the model, paying particular attention to those activities that might be conducted differently in LMICs.

5 July 2024 in Journal of the International AIDS Society
Verified
Journal Article
Open access
MMelissa Mugambi
Melissa Mugambi
BOBen O. Odhiambo
Ben O. Odhiambo
ADAnnabell Dollah
Annabell Dollah
MMMary M. Marwa
Mary M. Marwa
JNJudith Nyakina
Judith Nyakina
BHBrett Hauber
Brett Hauber
Introduction: Pharmacy‐delivered HIV prevention services might create more options for pregnant women to use HIV prevention tools earlier and more consistently during pregnancy. We quantified preferences for attributes of potential HIV prevention services among women of childbearing age in Western Kenya.Methods: From June to November 2023, we administered a face‐to‐face discrete choice experiment survey to women aged 15–44 in Kenya's Homa Bay, Kisumu and Siaya counties. The survey evaluated preferences for HIV prevention services, described by seven attributes: service location, travel time, type of HIV test, sexually transmitted infection (STI) testing, partner HIV testing, pre‐exposure prophylaxis (PrEP) and service fee. Participants answered a series of 12‐choice questions. Each question asked them to select one of two service options or no services—an opt‐out option. We used hierarchical Bayesian modelling levels to estimate each attribute level's coefficient and understand how attributes influenced service choice.Results: Overall, 599 participants completed the survey, among whom the median age was 23 years (IQR: 18–27); 33% were married, 20% had a job and worked regularly, and 52% had been pregnant before. Participants, on average, strongly preferred having any HIV prevention service option over none (opt‐out preference weight: −5.84 [95% CI: −5.97, −5.72]). The most important attributes were the availability of PrEP (relative importance 27.04% [95% CI: 25.98%, 28.11%]), followed by STI testing (relative importance 20.26% [95% CI: 19.52%, 21.01%]) and partner HIV testing (relative importance: 16.35% [95% CI: 15.79%, 16.90%]). While, on average, participants preferred obtaining services at the clinic more than pharmacies, women prioritized the availability of PrEP, STI testing and partner HIV testing more than the location or cost.Conclusions: These findings suggest the importance of providing comprehensive HIV prevention services and ensuring PrEP, STI testing and partner HIV testing are available. If pharmacies can offer these services, women are likely to access those services at pharmacies even if they prefer clinics.

3 April 2023 in BMJ Open
Verified
Journal Article
Open access
PDF file
YCyilin chen
yilin chen
ESEnrique M Saldarriaga
Enrique M Saldarriaga
MMMichalina A Montano
Michalina A Montano
KNKenneth Ngure
Kenneth Ngure
NTNicholas Thuo
Nicholas Thuo
MSMonisha Sharma
Monisha Sharma
Introduction Pre-exposure prophylaxis (PrEP) is highly effective at preventing HIV acquisition, but coverage remains low in high prevalence settings. Initiating and continuing PrEP via online pharmacies is a promising strategy to expand PrEP uptake but little is known about user preferences for this strategy. We describe methods for a discrete choice experiment (DCE) to assess preferences for PrEP delivery from an online pharmacy. Methods and analysis This cross-sectional study is conducted in Nairobi, Kenya, in partnership with MYDAWA, a private online pharmacy retailer with a planned sample size of >400 participants. Eligibility criteria are: ≥18 years, not known HIV-positive and interested in PrEP. Initial DCE attributes and levels were developed via literature review and stakeholder meetings. We conducted cognitive interviews to assess participant understanding of the DCE survey and refined the design. The final DCE used a D-efficient design and contained four attributes: PrEP eligibility assessment, HIV test type, clinical consultation type and user support options. Participants are presented with eight scenarios consisting of two hypothetical PrEP delivery services. The survey was piloted among 20 participants before being advertised on the MYDAWA website on pages displaying products indicating HIV risk (eg, HIV self-test kits). Interested participants call a study number and those screened eligible meet a research assistant in a convenient location to complete the survey. The DCE will be analysed using a conditional logit model to assess average preferences and mixed logit and latent class models to evaluate preference heterogeneity among subgroups. Ethics and dissemination This study was approved by the University of Washington Human Research Ethics Committee (STUDY00014011), the Kenya Medical Research Institute, Nairobi County (EOP/NMS/HS/128) and the Scientific and Ethics Review Unit in Kenya (KEMRI/RES/7/3/1). Participation in the DCE is voluntary and subject to completion of an electronic informed consent. Findings will be shared at international conferences and peer-reviewed publications, and via engagement meetings with stakeholders.

12 November 2021 in PLOS ONE
Verified
Journal Article
Open access
PDF file
NNNina Nganga
Nina Nganga
JDJulia Dettinger
Julia Dettinger
JKJohn Kinuthia
John Kinuthia
JBJared Baeten
Jared Baeten
GJGrace John-Stewart
Grace John-Stewart
MMelissa Mugambi
Melissa Mugambi
In sub-Saharan Africa little is known about how often women use pregnancy self-tests or characteristics of these women despite evidence that pregnancy self-testing is associated with early antenatal care (ANC) initiation. Understanding the characteristics of women who use pregnancy self-tests can facilitate more targeted efforts to improve pregnancy testing experiences and entry into the ANC pathway. We conducted a cross-sectional survey among pregnant women enrolling in a pre-exposure prophylaxis (PrEP) implementation study to determine the prevalence and factors associated with pregnancy self-testing among women in western Kenya. Overall, in our study population, 17% of women obtained a pregnancy self-test from a pharmacy. Pregnancy test use was higher among employed women, women with secondary and college-level educated partners, and women who spent 30 minutes or less traveling to the maternal and child health (MCH) clinic. The most reported reasons for non-use of pregnancy self-tests included not thinking it was necessary, lack of knowledge, and money to pay for the test. Future research should focus on understanding the knowledge and attitudes of women toward pregnancy self-testing as well as developing community-based models to improve access to pregnancy testing and ANC.

26 June 2025 in Journal of the International AIDS Society
Verified
Journal Article
Open access
CKCatherine Kiptinness
Catherine Kiptinness
PNPaulami Naik
Paulami Naik
TKTabitha Kareithi
Tabitha Kareithi
NTNicholas Thuo
Nicholas Thuo
POPhelix Okello
Phelix Okello
TTthe ePrEP Kenya team
the ePrEP Kenya team
Introduction: The expansion of telecommunication networks and smartphones in many African countries could be leveraged to deliver HIV prevention products directly to consumers. In collaboration with a private e‐commerce platform and online pharmacy in Kenya, MYDAWA, we piloted a new model of HIV pre‐ and post‐exposure prophylaxis (PrEP/PEP) delivery.Methods: In the ePrEP Kenya pilot (NCT05377138), individuals living in Nairobi and Mombasa Counties could complete a free telehealth visit with a remote clinician to assess eligibility for online PrEP/PEP (i.e. ≥18 years; no medical contraindications). Eligible individuals could order HIV testing services—courier delivered to clients’ choice location—for a fee of 250 KES (∼$2 USD) for self‐testing or 150 KES (∼$1 USD) for provider‐administered rapid diagnostic testing. Following confirmation of clients’ HIV‐negative status (via an uploaded test result image), free PrEP/PEP drugs from government supply were courier delivered with or separately from HIV testing services. Clients paid a delivery fee ≤149 KES (∼$1 USD) per courier visit.Results: From October 2022 to December 2023, we screened 2257 individuals and enrolled 1915. Most PrEP/PEP clients were men (63%, 1428/1915), ≥25 years (72%, 1631/1915) and never married (80%, 1796/1915); few had ever used PrEP (3%, 48/1915) or PEP (14%, 263/1915). At enrolment, 227 (12%) were preliminarily eligible for PrEP and 1688 (88%) for PEP. Among PrEP‐eligible clients, 89% (203/227) completed HIV testing and 92% (208/227) received PrEP; among PEP‐eligible clients, 92% (1551/1688) completed HIV testing and 92% (1549/1688) received PEP. Most PrEP/PEP clients completed HIV testing within 6 hours of their telehealth visit (53%, 927/1757) and had drugs delivered with testing services (88%, 1546/1757). Among PrEP clients eligible for follow‐up, 47% (120/256) continued PrEP and 4% (10/256) initiated PEP following PrEP discontinuation. Among PEP clients eligible for follow‐up, 7% (99/1428) repeated PEP use and 6% (83/1428) transitioned from PEP to PrEP.).Conclusions: Online PrEP/PEP delivery could expand access to prevention services by reaching individuals not engaged in existing delivery platforms. The uptake of online PEP was five times greater than PrEP, underscoring an unmet demand for PEP and highlighting the potential for online pharmacies to deliver time‐sensitive PEP services.

9 October 2024 in Journal of the International AIDS Society
Verified
Journal Article
Open access
ESEnrique M Saldarriaga
Enrique M Saldarriaga
YCYilin Chen
Yilin Chen
MMMichalina A. Montaño
Michalina A. Montaño
NTNicholas Thuo
Nicholas Thuo
CKCatherine Kiptinness
Catherine Kiptinness
MSMonisha Sharma
Monisha Sharma
Introduction: Oral pre‐exposure prophylaxis (PrEP) is highly effective, but coverage remains low in high HIV prevalence settings. Initiating and continuing PrEP remotely via online pharmacies is a promising strategy to expand PrEP uptake, but little is known about potential users’ preferences.Methods: We conducted a discrete choice experiment (DCE) to assess preferences for online pharmacy PrEP services. We partnered with MYDAWA, an online pharmacy in Nairobi, Kenya. Eligibility criteria were: ≥18 years, not known HIV positive, interested in PrEP. The DCE contained four attributes: PrEP eligibility assessment (online self‐assessed, guided), HIV test type (provider administered, oral HIV self‐test [HIVST], blood‐based HIVST), clinical consultation (remote, in‐person) and user support options (text messages, phone/video call, email). Additionally, participants indicated whether they were willing to uptake their selected service. The survey was advertised on MYDAWA's website; interested participants met staff in‐person at a convenient location to complete the survey from 1 June to 20 November 2022. We used conditional logit modelling with an interaction by current PrEP use to estimate overall preferences and latent class analysis (LCA) to assess preference heterogeneity.Results: Overall, 772 participants completed the DCE; the mean age was 25 years and 54% were female. Most participants indicated a willingness to acquire online PrEP services, with particularly high demand among PrEP‐naive individuals. Overall, participants preferred remote clinical consultation, HIV self‐testing, online self‐assessment and phone call user support. The LCA identified three subgroups: the “prefer online PrEP with remote components” group (60.3% of the sample) whose preferences aligned with the main analysis, the “prefer online PrEP with in‐person components” group (20.7%), who preferred in‐person consultation, provider‐administered HIV testing, and guided assessment, and the “prefer remote PrEP (18.9%)” group who preferred online PrEP services only if they were remote.Conclusions: Online pharmacy PrEP is highly acceptable and may expand PrEP coverage to those interested in PrEP but not accessing services. Most participants valued privacy and autonomy, preferring HIVST and remote provider interactions. However, when needing support for questions regarding PrEP, participants preferred phone/SMS contact with a provider. One‐fifth of participants preferred online PrEP with in‐person components, suggesting that providing multiple options can increase uptake.