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Okello Samson


Dr. Samson Okello has been a faculty member since 2012, and is currently a lecturer.

Dr. Okello received postgraduate degree in Internal Medicine from Mbarara University of Science and Technology and a masters of degree in Epidemiology from Harvard University. Dr. Okello is a current Lown scholar at Harvard T. H Chan School of Public Health and a visiting Professor of Medicine at University of Virginia, USA.

Dr. Okello is leads clinical care of patients and specifically heads the hypertension outpatients’ clinic where, he is interested in novel low cost and sustainable approaches for improving blood pressure control and patients’ adherence to long term evidence-based cardiovascular medication.  He also initiated and operationalized  the Gastroenterology subspeciality, performing diagnostic upper GI endoscopy for the entire southwestern Uganda as well as teaching the subject to residents and medical students. 

Dr. Okello's research interest include esophageal cancer, hypertension, and heart failure, investigating the interaction of biological and behavioral factors in casuation of Esophageal cancer and cardiovascular diseases in resource-limited settings.

Over the years, Dr.Okello initiated and heads tele-education case conferences between internal medicine residents ofMUST and those at the University of Virginia, USA, in various medical subspecialities where MUST has no expertise.  He has received numerous teaching accolades in recognition for his skills as a researcher and educator as well as his humanistic approach to medicine.



Peer-reviewed publications.

  1. Okello S, Asiimwe SB, Kanyesigye M, Muyindike WR, Boum Y 2nd, Mwebesa BB, Haberer JE, Huang Y, Williams K, Burdo TH, Tracy RP, Bangsberg DR, Mocello AR, Martin JN, Hunt PW, Siedner MJ. D-Dimer Levels Antiretroviral Therapy in Uganda.and Traditional Risk Factors Are Associated With Incident Hypertension Among HIV-Infected Individuals Initiating. J Acquir Immune Defic Syndr. 2016 Dec 1;73(4):396-402. PMID: 27171743
  2. Feinstein MJ, Kim JH, Bibangambah P, Sentongo R, Martin JN, Tsai AC, Bangsberg DR, Hemphill L, Triant VA, Boum Y 2nd, Hunt PW, Okello S, Siedner MJ. Ideal Cardiovascular Health and Carotid Atherosclerosis in a Mixed Cohort of HIV-Infected and Uninfected Ugandans. AIDS Res Hum Retroviruses. 2017 Jan;33(1):49-56. doi: 10.1089/AID.2016.0104. Epub 2016 Sep 7. PMID:  27476547
  3. Okello S, Churchill C, Owori R, Nasasira B, Tumuhimbise C, Abonga CL, Mutiibwa D, Christiani DC, Corey KE. Population attributable fraction of Esophageal squamous cell carcinoma due to smoking and alcohol in Uganda. BMC Cancer. 2016 Jul 11;16:446. doi: 10.1186/s12885-016-2492-x. PMID: 27400987
  4. Okello S, Nasasira B, Muiru AN, Muyingo A. Validity and Reliability of a Self-Reported Measure of Antihypertensive Medication Adherence in Uganda. PLoS One. 2016 Jul 1;11(7):e0158499. doi: 10.1371/journal.pone.0158499. eCollection 2016. PMID:27367542
  5. Asiimwe SB, Kanyesigye M, Bwana B, Okello S, Muyindike W. Predictors of dropout from care among HIV-infected patients initiating antiretroviral therapy at a public sector HIV treatment clinic in sub-Saharan Africa.  BMC Infect Dis. 2016 Feb 1;16:43. doi: 10.1186/s12879-016-1392-7. PMID:26832737
  6. Siedner MJ, Kim JH, Nakku RS, Hemphill L, Triant VA, Haberer JE, Martin JN, Boum Y 2nd, Kwon DS, Tsai AC, Hunt PW, Okello S, Bangsberg DR. HIV infection and arterial stiffness among older-adults taking antiretroviral therapy in rural Uganda. AIDS. 2016 Feb 20;30(4):667-70. doi: 10.1097/QAD.0000000000000992. PMID:26636926
  7. Okello S, Cristina Churchill, Rogers Owori, Benson Nasasira, Christine Tumuhimbise, Charles Lagoro Abonga, David Mutiibwa, Kathleen E Corey. "Risk Factors of Esophageal Squamous Cell Cancer in Southwestern: A Case-Control Study. J J Internal Medicine. 2015, 1(1):005.
  8. Okello S, Kanyesigye M, Muyindike WR, Annex BH, Hunt PW, Haneuse S, Siedner MJ. Incidence and predictors of hypertension in adults with HIV-initiating antiretroviral therapy in south-western Uganda. J Hypertens. 2015 Oct;33(10):2039-45. doi: 10.1097/HJH.0000000000000657. PMID: 26431192
  9. Siedner MJ, Kim JH, Nakku RS, Bibangambah P, Hemphill L, Triant VA, Haberer JE, Martin JN, Mocello AR, Boum Y 2nd, Kwon DS, Tracy RP, Burdo T, Huang Y, Cao H, Okello S, Bangsberg DR, Hunt PW. Persistent Immune Activation and Carotid Atherosclerosis in HIV-Infected Ugandans Receiving Antiretroviral Therapy.  J Infect Dis. 2016 Feb 1;213(3):370-8. doi: 10.1093/infdis/jiv450. PMID:26347573
  10. Okello S, Rogers O, Byamugisha A, Rwebembera J, Buda AJ. Characteristics of acute heart failure hospitalizations in a general medical ward in Southwestern Uganda.  Int J Cardiol. 2014 Oct 20;176(3):1233-4. doi: 10.1016/j.ijcard.2014.07.212. PMID:25127332
  11. Okello S, Millard A, Owori R, Asiimwe SB, Siedner MJ, Rwebembera J, Wilson LA, Moore CC, Annex BH. Prevalence of lower extremity peripheral artery disease among adult diabetes patients in southwestern Uganda.  BMC  Cardiovasc  Disord. 2014 Jun 10;14:75. doi: 10.1186/1471-2261-14-75. PMID:  24913468
  12. Asiimwe SB, Okello S, Moore CC . Frequency of vital signs monitoring and its association with mortality among adults with severe sepsis admitted to a general medical ward in Uganda.  PLoS One. 2014 Feb 28;9(2):e89879. doi: 10.1371/journal.pone.0089879. eCollection 2014. PMID: 24587094
  13. A head-to-head comparison of four artemisinin-based combinations for treating uncomplicated malaria in African children: a randomized trial. Four Artemisinin-Based Combinations (4ABC) Study Group. PLoS Med. 2011 Nov;8(11):e1001119. doi: 10.1371/journal.pmed.1001119. Epub 2011 Nov 8.

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