African swine fever and the dilemma of a relatively low contagiousness
African swine fever (ASF) is a viral disease of domestic and wild pigs, characterised by a high fatality rate and relatively low contagiousness . These qualities lead to a slow spread of the disease within pig populations and the initial low mortality rate makes disease prevention and early detection particularly challenging. In the current ASF epizootic in Europe and Asia, a separate epidemiological cycle of ASF (Fig. 1) has been described , in which virus circulation is maintained within wild boar populations and their habitat.