1 Institute of Health and Society, Faculty of Public Health, Université Catholique de Louvain, Brussels 1200, Belgium; Department of Public Health, University of Mbujimayi, Mbujimayi, DR Congo. Electronic address: nadine.kayiba@uclouvain.be.
2 Departments of Internal Medicine & Basic Sciences, University of Mbujimayi, Mbujimayi, DR Congo; Departments of Virology and Parasitology, Graduate School of Medicine, Osaka Metropolitan University, Osaka, Japan; Research Center of Infectious Disease Sciences, Graduate School of Medicine, Osaka Metropolitan University, Osaka, Japan.
3 Departments of Virology and Parasitology, Graduate School of Medicine, Osaka Metropolitan University, Osaka, Japan; Research Center of Infectious Disease Sciences, Graduate School of Medicine, Osaka Metropolitan University, Osaka, Japan.
4 Institute of Health and Society, Faculty of Public Health, Université Catholique de Louvain, Brussels 1200, Belgium.