General paediatrician at the Emma Children’s Hospital, Amsterdam UMC and since 2018 a senior scientist in Global Child Health at AIGHD. He lived and worked in Malawi between 2012-2015 and since then he co-leads a large Malawian research group looking at the interplay between acute illness and undernutrition in children with dr. Emmie Mbale and dr. Robert Bandsma. Clinical phenotyping of fragile children has his main interest; early risk prediction and triage but also Cause-of-Death with minimally invasive tissue sampling are areas of interest. Since 2015 he is the site-PI for the Childhood Acute Illness and Nutrition (CHAIN) network in Malawi. In the CHAIN network he collaborates with internationally renowned scientists from SickKids Toronto, KEMRI/Wellcome trust and the University of Washington. WV is a honorary Senior Lecturer in Paediatrics and Child Health at Kamuzu University of Health Sciences (KUHeS, Queen Elisabeth Central Hospital).