Validation and Identification of Invasive Salmonella Serotypes in Sub-Saharan Africa by Multiplex Polymerase Chain Reaction.
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Salmonella enterica serovar Typhi and nontyphoidal Salmonella (NTS) cause the majority of bloodstream infections in sub-Saharan Africa; however, serotyping is rarely performed. We validated a multiplex polymerase chain reaction (PCR) assay with the White-Kauffmann-Le Minor (WKLM) scheme of serotyping using 110 Salmonella isolates from blood cultures of febrile children in Ghana and applied the method in other Typhoid Fever Surveillance in Africa Program study sites. In Ghana, 47 (43%) S. Typhi, 36 (33%) Salmonella enterica serovar Typhimurium, 14 (13%) Salmonella enterica serovar Dublin, and 13 (12%) Salmonella enterica serovar Enteritidis were identified by both multiplex PCR and the WKLM scheme separately. Using the validated multiplex PCR assay, we identified 42 (66%) S. Typhi, 14 (22%) S. Typhimurium, 2 (3%) S. Dublin, 2 (3%) S. Enteritidis, and 4 (6%) other Salmonella species from the febrile patients in Burkina Faso, Guinea-Bissau, Madagascar, Senegal, and Tanzania. Application of this multiplex PCR assay in sub-Saharan Africa could advance the knowledge of serotype distribution of Salmonella.
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Al-Emran, Hassan M, Ralf Krumkamp, Denise Myriam Dekker, Daniel Eibach, Peter Aaby, Yaw Adu-Sarkodie, Mohammad Ali, Mathew P Rubach, et al. (2016). Validation and Identification of Invasive Salmonella Serotypes in Sub-Saharan Africa by Multiplex Polymerase Chain Reaction. Clin Infect Dis, 62 Suppl 1. pp. S80–S82. 10.1093/cid/civ782 Retrieved from https://hdl.handle.net/10161/13757.
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Scholars@Duke
Matthew P. Rubach
John Andrew Crump
I am based in northern Tanzania where I am Site Leader for Duke University’s collaborative research program based at Kilimanjaro Christian Medical Centre and Director of Tanzania Operations for the Duke Global Health Institute. I oversee the design and implementation of research studies on infectious diseases, particularly febrile illness, invasive bacterial disease, HIV-associated opportunistic infections, clinical trials of antiretroviral therapy and prevention of mother-to-child transmission of HIV, and infectious diseases diagnostics. In addition, I am a medical epidemiologist with the US Centers for Disease Control and Prevention (CDC). My CDC work focuses on enteric infection epidemiology and prevention in developing countries, particularly invasive salmonelloses.
Julian T Hertz
Julian Hertz, MD, MSc, is an Associate Professor of Emergency Medicine & Global Health. He graduated summa cum laude from Princeton University and attended medical school at Duke University, where he received the Dean's Merit Scholarship and the Thomas Jefferson Award for leadership. He completed his residency training in emergency medicine at Vanderbilt University Medical Center and his fellowship in Global Health at Duke.
Dr. Hertz's primary interests include global health, implementation science, and undergraduate and graduate medical education. Dr. Hertz's research focuses on using implementation science methods to improve cardiovascular care both locally and globally. His current projects involve developing interventions to improve acute myocardial infarction care in Tanzania, to improve management of hypertension among Tanzanians with HIV, and to improve post-hospital care among patients with multimorbidity in East Africa.
Dr. Hertz has received numerous awards for clinical, educational, and research excellence, including the Duke Emergency Medicine Faculty Teacher of the Year Award, the Duke Emergency Medicine Faculty Clinician of the Year Award, and the Duke Emergency Medicine Faculty Researcher of the Year Award. He has also received the Golden Apple Teaching Award from the Duke medical student body, the Duke Master Clinician/Teacher Award, and the Global Academic Achievement Award from the Society of Academic Emergency Medicine.
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