Phiri S, Neuhann F, Glaser N, Gass T, Chaweza T, Tweya H. (2017). The path from a volunteer initiative to an established institution: Evaluating 15 years of the development and contribution of the Lighthouse trust to the Malawian HIV response. BMC Health Services Research, 17(1), 1–11.

van Lettow M, Tweya H, Rosenberg NE, Trapence C, Kayoyo V, Kasende F, Kaunda B, Hosseinipour MC, Eliya M, Cataldo F, Gugsa S, Phiri S; PURE Malawi consortium. Baseline characteristics of study sites and women enrolled in a three-arm cluster randomized controlled trial: PMTCT uptake and retention (pure) Malawi. Reprod Health. 2017 Jul 11;14(1):82. doi: 10.1186/s12978-017-0343-0. PubMed PMID:28693525; PubMed Central PMCID: PMC5504621.

Tweya H, Feldacker C, Heller T, Gugsa S, Ng'ambi W, Nthala O, Kalulu M, Chiwoko J, Banda R, Makwinja A, Phiri S. Characteristics and outcomes of older HIV-infected patients receiving antiretroviral therapy in Malawi: A retrospective observation cohort study. PLoS One. 2017 Jul 7;12(7):e0180232. doi:10.1371/journal.pone.0180232. eCollection 2017. PubMed PMID: 28686636

Ongubo DM, Lim R, Tweya H, Stanley CC, Tembo P, Broadhurst R, Gugsa S, Ngongondo M, Speight C, Heller T, Phiri S, Hosseinipour MC. A cross-sectional study to evaluate second line virological failure and elevated bilirubin as a surrogate for adherence to atazanavir/ritonavir in two urban HIV clinics in Lilongwe, Malawi. BMC Infect Dis. 2017 Jul 3;17(1):461. doi:10.1186/s12879-017-2528-0. PubMed PMID: 28673254; PubMed Central PMCID:PMC5496231.

Gugsa S, Potter K, Tweya H, Phiri S, Sande O, Sikwese P, Chikonda J, O'Malley G. Exploring factors associated with ART adherence and retention in care under Option B+ strategy in Malawi: A qualitative study. PLoS One. 2017 Jun 21;12(6):e0179838. doi: 10.1371/journal.pone.0179838. eCollection 2017. PubMed PMID: 28636669; PubMed Central PMCID: PMC5479573.

 McCarthy E, Joseph J, Foster G, Mangwiro AZ, Mwapasa V, Oyeledun B, Phiri S, Sam-Agudu NA, Essajee S. Modeling the Impact of Retention Interventions on Mother-to-Child Transmission of HIV: Results From INSPIRE Studies in Malawi, Nigeria, and Zimbabwe. J Acquir Immune Defic Syndr. 2017 Jun 1;75 Suppl 2:S233-S239. doi: 10.1097/QAI.0000000000001364. PubMed PMID: 28498194; PubMed Central PMCID: PMC5432093.

Cataldo F, Sam-Agudu NA, Phiri S, Shumba B, Cornelius LJ, Foster G. The Roles of Expert Mothers Engaged in Prevention of Mother-to-Child Transmission (PMTCT) Programs: A Commentary on the INSPIRE Studies in Malawi, Nigeria, and Zimbabwe. J Acquir Immune Defic Syndr. 2017 Jun 1;75 Suppl 2:S224-S232. doi:10.1097/QAI.0000000000001375. PubMed PMID: 28498193.

Phiri S, Tweya H, van Lettow M, Rosenberg NE, Trapence C, Kapito-Tembo A, Kaunda-Khangamwa B, Kasende F, Kayoyo V, Cataldo F, Stanley C, Gugsa S, Sampathkumar V, Schouten E, Chiwaula L, Eliya M, Chimbwandira F, Hosseinipour MC; PURE Malawi Consortium. Impact of Facility- and Community-Based Peer Support Models on Maternal Uptake and Retention in Malawi's Option B+ HIV Prevention of Mother-to-Child Transmission Program: A 3-Arm Cluster Randomized Controlled Trial (PURE Malawi). J Acquir Immune Defic Syndr. 2017 Jun 1;75 Suppl 2:S140-S148. doi:10.1097/QAI.0000000000001357. PubMed PMID: 28498183.

Kalua T, Tippett Barr BA, van Oosterhout JJ, Mbori-Ngacha D, Schouten EJ, Gupta S, Sande A, Zomba G, Tweya H, Lungu E, Kajoka D, Tih P, Jahn A. Lessons Learned From Option B+ in the Evolution Toward "Test and Start" From Malawi, Cameroon, and the United Republic of Tanzania. J Acquir Immune Defic Syndr. 2017 May 1;75 Suppl 1:S43-S50. doi: 10.1097/QAI.0000000000001326. Review. PubMed PMID: 28398996.

Wesevich A, Mtande T, Saidi F, Cromwell E, Tweya H, Hosseinipour MC, Hoffman I, Miller WC, Rosenberg NE. Role of male partner involvement in ART retention and adherence in Malawi's Option B+ program. AIDS Care. 2017 Mar 29:1-9. doi: 10.1080/09540121.2017.1308464. [Epub ahead of print] PubMed PMID: 28355926.

Cataldo F, Chiwaula L, Nkhata M, van Lettow M, Kasende F, Rosenberg NE, Tweya H, Sampathkumar V, Hosseinipour M, Schouten E, Kapito-Tembo A, Eliya M, Chimbwandira F, Phiri S; PURE Malawi Consortium. Exploring the Experiences of Women and Health Care Workers in the Context of PMTCT Option B Plus in Malawi. J Acquir Immune Defic Syndr. 2017 Apr 15;74(5):517-522. doi: 10.1097/QAI.0000000000001273. PubMed PMID: 28045712; PubMed Central PMCID: PMC5340586.

Heller T, Mtemang'ombe EA, Huson MA, Heuvelings CC, Bélard S, Janssen S, Phiri S, Grobusch MP. Ultrasound for patients in a high HIV/tuberculosis prevalence setting: a needs assessment and review of focused applications for Sub-Saharan Africa. Int J Infect Dis. 2017 Mar;56:229-236. doi:10.1016/j.ijid.2016.11.001. Epub 2016 Nov 9. Review. PubMed PMID: 27836795.

Download: Lighthouse Training Manual in HIV and TB Medicine


Glaser N, Phiri S, Bruckner T, Nsona D, Tweya H, Ahrenshop N, Neuhann F. The Prevalence of Renal Impairment in Individuals Seeking HIV Testing in Urban Malawi. BMC Nephrol. 2016 Nov 22;17(1):186. PubMed PMID: 27875991; PubMed Central PMCID: PMC5118906.

Chiwaula LS, Chirwa GC, Caltado F, Tembo AK, Hosseinipour MC, Van Lettow M, Tweya H, Kayoyo V, Kaunda BK, Kasende K, Trapence C, Gugsa S, Rosenberg NE, Eliya M, Phiri S and For PURE Malawi Consortium (2016) The value of informal care in the context of option B+ in Malawi: a contingent valuation approach. BMC Health Services Research. 16:136 DOI: 10.1186/s12913-016-1381-y

 Chagomerana MB, Miller WC, Pence BW, Hosseinipour MC, Hoffman IF, Flick RJ, Tweya H, Mumba S, Chimbwandira F, Powers KA. (2016) PMTCT Option B+ does not increase preterm birth risk and may prevent extreme prematurity: A retrospective cohort study in Malawi. J Acquir Immune Defic Syndr. 74(4):367-374. doi: 10.1097/QAI.0000000000001253.

Harries AD, Suthar AB, Takarinda KC, Tweya H, Kyaw NT, Tayler-Smith K, Zachariah R. Ending the HIV/AIDS epidemic in low- and middle-income countries by 2030: is it possible? F1000Res. 2016 Sep 15;5:2328. eCollection 2016. Review. PubMed PMID: 27703672; PubMed Central PMCID: PMC5031124.

Tang JH, Phiri S, Ng'ambi W, Krashin JW, Mlundira L, Chaweza T, Samala B,Tweya H, Hosseinipour MC, Haddad LB. Factors Associated with Hormonal and Intrauterine Contraceptive Use among HIV-Infected Men and Women in Lilongwe, Malawi: A Cross-Sectional Study. Infect Dis Obstet Gynecol. 2016;2016:5429316. doi: 10.1155/2016/5429316. Epub 2016 Aug 24. PubMed PMID: 27642245; PubMed Central PMCID: PMC5013202.

Tweya H, Feldacker C, Gadabu OJ, Ng’ambi W, Mumba SL, Phiri D, Kamvazina L, Mwakilama S, Kanyerere H, Keiser O, Mwafilaso J, Kamba C, Egger M, Jahn A, Simwaka B, Phiri S. Developing a point-of-care electronic medical record system for TB/HIV co-infected patients: Experiences from Lighthouse Trust, Lilongwe, Malawi. BMC Res Notes (2016) 9:146

Tweya H, Keiser O, Haas AD, Tenthani L, Phiri S, Egger M, Estill J. Comparative cost-effectiveness of Option B+ for prevention of mother to child transmission of HIV in Malawi: Mathematical modelling study. AIDS. 2016 Mar 27;30(6):953-62. doi: 10.1097/QAD.0000000000001009.

Phiri S, Feldacker C, Chaweza T, Mlundira L, Tweya H, Speight C, Samala B, Kachale F, Umpierrez D, Haddad L. Integrating reproductive health services into HIV care: strategies for successful implementation in a low-resource HIV clinic in Lilongwe, Malawi. J Fam Plann Reprod Health Care. 2016 Jan;42(1):17-23. doi: 10.1136/jfprhc-2013-100816. 


 Harries A D, Kumar A M V, Satyanarayana S, Lin Y, Takarinda K C, Tweya H, Reid A J, Zachariah R.  Communicable and non-communicable diseases: connections, synergies and benefits of integrating care. Public Health Action. 2015 Sep 21; 5(3): 156–157.

Ardura-Garcia C, Feldacker C, Tweya H, Chaweza T, Kalulu M, Phiri S, Wang D,  Weigel R.  Early Tracing of Children Lost to Follow-Up From Antiretroviral Treatment: True Outcomes and Future Risks. J Acquir Immune Defic Syndr. 2015 Dec 15;70(5):e160-7. doi: 10.1097/QAI.0000000000000772.


 Rosenberg NE, van Lettow M, Tweya H, Kapito-Tembo A, Bourdon CM, Cataldo F, Chiwaula L, Sampathkumar V, Trapence C, Kayoyo V, Kasende F, Kaunda B, Speight C, Schouten E, Eliya M, Hosseinipour M, Phiri S,  (2014). Improving PMTCT uptake and retention services through novel approaches in peer-based family-supported care in the clinic and community: a 3-arm cluster randomized trial (PURE Malawi). J Acquir Immune Defic Syndr. 2014 Nov 1;67 Suppl 2:S114-9. doi: 10.1097/QAI.0000000000000319.

Tabatabai J, Namakhoma, I, Tweya H, Phiri S, Schnitzler P, Neuhann F (2014). Understanding reasons for treatment interruption amongst patients on antiretroviral therapy Á A qualitative study at the Lighthouse Clinic, Lilongwe, Malawi. Glob Health Action 2014, 7: 24795 -

Haddad LB, Feldacker C, Jamieson DJ, Tweya H, Cwiak C, Bryant AG, Hosseinipour MC, Chaweza T, Mlundira L, Kachale F, Stuart GS, Hoffman I, Phiri S (2014). Medical eligibility, contraceptive choice, and intrauterine device acceptance among HIV-infected women receiving antiretroviral therapy in Lilongwe, Malawi. Int J Gynaecol Obstet. 2014 Sep;126(3):213-6. doi: 10.1016/j.ijgo.2014.03.026. Epub 2014 May 13.

 Tweya H, Gugsa S, Hosseinipour M, Speight C, Ng'ambi W, Bokosi M, Chikonda J, Chauma A, Khomani P, Phoso M, Mtande T, Phiri S. (2014). Understanding factors, outcomes and reasons for loss to follow-up among women in Option B+ PMTCT program in Lilongwe, Malawi. Trop Med Int Health. 2014 Nov;19(11):1360-6. doi: 10.1111/tmi.12369. Epub 2014 Aug 4.

Ramsay A, Harries AD, Zachariah R, Bissell K, Hinderaker SG, Edginton M, Enarson DA, Satyanarayana S, Kumar AM, Hoa NB, Tweya H, et al (2014). The Structured Operational Research and Training Initiative for public health programs. Public Health Action. 2014 Jun 21;4(2):79-84. doi: 10.5588/pha.14.0011. 

Palchaudhuri S, Tweya H, Hosseinipour M. (2014). Assessment of laboratory test utilization for HIV/AIDS care in urban ART clinics of Lilongwe, Malawi. Malawi Med J. 2014 Jun;26(2):42-4

Tenthani L, Haas AD, Tweya H, Jahn A, van Oosterhout JJ, Chimbwandira F, Chirwa Z, Ng'ambi W, Bakali A, Phiri S, Myer L, Valeri F, Zwahlen M, Wandeler G, Keiser O (2014). Retention in care under universal antiretroviral therapy for HIV-infected pregnant and breastfeeding women ('Option B+') in Malawi. AIDS. 2014 Feb 20;28(4):589-98. doi: 10.1097/QAD.0000000000000143

Tweya H, Ben-Smith A, Kalulu M, Jahn A, Ng’ambi W, Mkandawire E, Gabriel L, Phiri S. (2014). Timing of antiretroviral therapy and regimen for HIV-infected patients with tuberculosis: the effect of revised HIV guidelines in Malawi. BMC Public Health 2014 14:183.


Chomaker M, Egger M, Ndirangu J, Phiri S, Moultrie H, Technau K, Cox V,  Giddy J, Chimbetete C, Wood R, Gsponer T,  Moore CB,  Rabie H, Eley B, Muhe L, Penazzato M, Essajee S, Keiser O,  Davies M. (2013) When to Start Antiretroviral Therapy in Children Aged 2–5 Years: A Collaborative Causal Modelling Analysis of Cohort Studies from Southern Africa. PLoS Med 10(11): e1001555. doi:10.1371/journal.pmed.1001555

Haac BE, Charles AG, Matoga M, Lacourse SM, Nonsa D, Hosseinipour M. (2013) HIV Testing and Epidemiology in a Hospital-Based Surgical Cohort in Malawi. World J Sug 37(9): 2122-8

Tweya H, Feldacker C, Estill J, Jahn A, Ng’ambi W, Ben-Smith A, Keiser O, Bokosi M, Egger M, Speight C, Gumulira J, Phiri S. (2013) Are They Really Lost? “True” Status and Reasons for Treatment Discontinuation among HIV Infected Patients on Antiretroviral Therapy Considered Lost to Follow Up in Urban Malawi. PLoS ONE 8(9): e75761. doi:10.1371/journal.pone.0075761

Tweya H, Feldacker C, Phiri S, Ben-Smith A, Fenner L, Jahn A Kalulu M, Weigel R, Kamba C, Banda R, Egger M, Keiser O.(2013)  Comparison of treatment outcomes of new smear-positive pulmonary tuberculosis patients by HIV and antiretroviral status in a TB/HIV clinic, Malawi. PLoS ONE. 8(2)..

Johnson LF, Mossong J, Dorrington RE, Schomaker M, Hoffmann CJ, Keiser O, Fox MP, Wood R, Prozesky H, Giddy J, Garone DB, Cornell M, Egger M, Boulle A. (2013) Life expectancies of South African adults starting antiretroviral treatment: collaborative analysis of cohort studies. PLoS Med 10(4):e1001418. doi: 10.1371/journal.pmed.1001418

Johnson D, Feldacker C, Tweya H, Phiri S, Hosseinipour M. (2013 ) Factors associated with timely initiation of antiretroviral treatment in two HIV clinics in Lilongwe, Malawi. Int J STD AIDS 24(1):42-9. doi: 10.1177/0956462412472312

Tweya H, Feldacker C, Breeze E,  Jahn A,  Haddad LB, et al. (2013) Incidence of Pregnancy Among Women Accessing Antiretroviral Therapy in Urban Malawi: A Retrospective Cohort Study. AIDS Behav 17(2):471-8. doi: 10.1007/s10461-012-0150-0


Feldacker C, Johnson D, Hosseinipour M, Phiri S, Tweya H. Who Starts? Factors Associated with Starting Antiretroviral Therapy among Eligible Patients in Two, Public HIV Clinics in Lilongwe, Malawi. PLoS ONE 7(11): e50871. doi:10.1371/journal.pone.0050871

Tweya H, Feldacker C, Ben-Smith A, Weigel R, Boxshall M, Phiri S, Jahn A.‘Task-shifting’ in an antiretroviral clinic in Malawi: Can health surveillance assistants safely manage patients? Public Health Action. 2012 Dec 2(4).178-8.

Feldacker C, Tweya H, Keiser O, Weigel R, Kalulu M, Fenner L, Egger M, Manda E, Mwafilaso JB, Kamba C, Phiri S. (2012) Characteristics of adults and children diagnosed with tuberculosis in Lilongwe, Malawi: findings from an integrated HIV/TB clinic. Tropical Medicine and International Health, Vol.17, p.1108(9)

Cornell M, Schomaker M, Garone DB, Giddy J, Hoffmann CJ, Maskew M, Prozesky H, Wood R, Johnson LF, Egger M, Boulle A, Myer L. (2012) Gender differences in survival among adult patients starting antiretroviral therapy in South Africa: a multicentre cohort study.(Report) PLoS Med 9(9):

Luebbert J, Tweya H, Phiri S, Chaweza T, Mwafilaso J, Hosseinipour MC, Ramroth H, Schnitzler P, Neuhann F. (2012) Virological Failure and Drug Resistance in Patients on Antiretroviral Therapy After Treatment Interruption in Lilongwe, Malawi. Clinical Infectious Diseases, 2012, Vol.55(3), pp.441-448 [Peer Reviewed Journal]

Tweya H, Feldacker C, Ben-Smith A, Harries AD, Komatsu R, Jahn A, Phiri S, Tassie J. (2012) Simplifying ART cohort monitoring: Can pharmacy stocks provide accurate estimates of patients retained on antiretroviral therapy in Malawi? BMC Health Services Research, July 20, 2012, Vol.12, p.210

Vorkas CK, Tweya H, Mzinganjira D, Dickie G, Weigel R, Phiri S, Hosseinipour M. (2012) Practices to improve identification of adult antiretroviral therapy failure at the Lighthouse Trust clinic in Lilongwe, Malawi. Tropical Medicine & International Health 17(2):169-176


Gadabu, O.J.; Munthali, C.V.; Zachariah, R.; Gudmund-Hinderaker, S.; Jahn, A.; Tweya, H.; Gondwe, A.; Mumba, S.; Lungu, M.; Malisita, K.; Mhango, E.; Makombe, S.D.; Tenthani, L.; Mwalwanda, L.; Moyo, C.; Douglas, G.P.; Lewis, Z.L.; Chimbwandira, F.  Is transcription of data on antiretroviral treatment from electronic to paper-based registers reliable in Malawi? Public Health Action, Volume 1, Number 1, September 2011 , pp. 10-12(3)

Van Lettow, M.; Chan, A.K.; Ginsburg, A.S.; Tweya, H.; Gareta, D.; Njala, J.; Kanyerere, H.; Phiri, S.; Idana, I. Timing and uptake of ART during treatment for active tuberculosis in HIV co-infected adults in Malawi. Public Health Action, Volume 1, Number 1, September 2011 , pp. 6-9(4)
Weigel, R. Hochgesang, M. Brinkhof, M. Hosseinipour, M. Boxshall, M. Mhango, E.  Nkwazi, B. Tweya, H et al  Outcomes and associated risk factors of patients traced after being lost to follow-up from antiretroviral treatment in Lilongwe, Malawi. BMC Infect Dis. 2011 Jan 27;11:31