Research fellow, Gade Research Group for Infection and Immunity, Department of Clinical Science, University of Bergen, Bergen, Norway, and Institute of Biosciences, University of São Paulo, São Paulo, Brazil; karl.muller@uib.no. Research fellow, Global Health Priorities, Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway, and guest researcher, Centre for the Study of Mind in Nature, Department of Philosophy, Classics, History of Art and Ideas, University of Oslo, Oslo, Norway.