In recent years several "new" infectious agenLs have been associated with neonatal diarrhoea in both calves and pigs. Furthermore, important additional information has become available as regards enterotoxigenic Escherichia coli infec tions in both species. Although still much has to be learned, it is likely that in many field cases differnt agents act in concert. Therefore an integrated approach to the problem of neonatal diarrhoea appears to be necessary, particularly in the field research. Such an approach requires a series of diagnostic techniques. The purpose of this meeting was to bring...