Primus is a public health specialist and bioethicist, with an interest in the ethics of controlled human infection studies and health policy and systems research in LMICs. He leads a social science controlled human malaria infection (CHMI) study imbedded within ongoing and planned CHMI studies at the KEMRI-Wellcome Trust Research Programme in kilifi, Kenya. Working with a team of scientists and social scientists, he employs empirical ethics approaches to understand the social and ethical implications of conducting such studies in a LMIC setting, with the goal of strengthening policy and practice. Primus joined the programme in July 2018 as a Mid-Level Social Scientist (Senior Postdoctoral Researcher) from the Karolinska Institute, Sweden, where he served as a researcher and lecturer with the Department of Public Health Sciences from March 2016 – April 2018. Prior to that he served as a doctoral researcher with the Peace Research Institute Oslo (PRIO), where he worked on health systems in conflict-affected settings. Primus holds a PhD in International Health from the University of Oslo, Norway, an MPH (Public health and Research ethics) from the University of Pretoria, South Africa, and an M.Sc. (Medical Microbiology/Parasitology) from the University of Buea, Cameroon.