A vocationborn in Brazzaville

She obtained her medical degree from the Faculty of Health Sciences at Marien Ngouabi University. Early on, she chose to focus her career on medical biology, a strategic discipline for disease diagnosis, as well as for epidemiological surveillance and the fight against infectious diseases. For her, the laboratory is not simply a technical space: it is a true lever for public health.

An international careerd’excellence

Her specialization first led her to Cheikh Anta Diop University in Dakar, a leading center for medical training in West Africa, and then to the University of Cocody, now Félix Houphouët-Boigny University, in Côte d'Ivoire. There, she consolidated in-depth expertise in medical biology, particularly in bacteriology, virology, parasitology, mycology, clinical biochemistry, and biological hematology—crucial fields on a continent facing persistent challenges in various pathologies, including infectious diseases.

Her scientific ambition then led her to France, to the University of Bordeaux, where she earned a doctorate in Microbiology-Immunology. This doctoral training strengthened her profile as a researcher, with a marked interest in the infectious mechanisms of a particular bacterium little known to the public, Helicobacter pylori, responsible for gastroduodenal diseases.

An academicreference

Upon returning to the Republic of Congo, Associate Professor Ngoyi Ontsira established herself as a leading teacher-researcher at the Faculty of Health Sciences of Marien Ngouabi University. She participated in the training of new generations of general practitioners, as well as graduates in biomedical sciences, nursing sciences and public health, while pursuing research dedicated to the study of bacteria and their resistance to antibiotics, as well as viruses, including HIV and hepatitis viruses.

His academic commitment is recognized by his title of CAMES Associate Professor in bacteriology and virology, a continental distinction that attests to his scientific, pedagogical and institutional excellence.

Of his responsibilities: strengthening of thethe triad of care - teaching – research

Her rigorous work ethic and respect for her superiors led them to place their trust in her, entrusting her with positions of responsibility both at the hospital and the university. She served as Head of the Bachelor's Degree Program in Biomedical Sciences, then as Head of the Doctoral Training Program in Health and Human Biology, and finally as Director of Medical Affairs. Furthermore, she is President of the Congolese Society of Clinical Biology and contributes to the community through her involvement in several committees, including those focused on combating nosocomial infections and the poliovirus containment technical group. In the context of modernizing the Congolese healthcare system and training professionals, she demonstrates leadership grounded in scientific expertise and academic experience.

At the crossroads of the laboratory, the lecture hall, and now hospital management, Dr. Ngoyi Ontsira champions a clear conviction: quality care rests on sound diagnosis, ongoing professional development, and applied research. Her career also symbolizes the rise of female leadership in medical governance in Central Africa. Indeed, Dr. Esther Nina Ngoyi Ontsira embodies a modern, demanding, and forward-looking approach to medicine—serving patients, students, and the Congolese healthcare system.