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'''Michel L. Garenne''', {{PhD}} (demography), is Director of Research at the French ''Institute for Research and Development'' (IRD) and is currently working at the ''Institut Pasteur'', Emerging Diseases Unit, in Paris. He is also honorary Associate Professor at the {{UNI|University of Witwatersrand|Wits}}, Johannesburg. He directed the ''Niakhar Demographic Surveillance System '' in Senegal in the 1980s and has collaborated with the ''Agincourt Health and Demographic Surveillance System '' in South Africa since 1992. He is the author of numerous publications on population and health issues in Africa, and has taught demography at several universities in Europe (Paris, Clermont‑Ferrand, {{UNI|Heidelberg|RKU}}, {{UNI|Antwerp|UAntwerpen}}), and in the United States ({{UNI|Harvard|HU}}).

In 2022, Garenne investigated the complex relationships between [[circumcision ]] and [[HIV ]] prevalence in Lesotho and found no net effect of [[circumcision]] on [[HIV]]. The study (see below) questions the amount of effort and money spent on [[VMMC]] in Lesotho.