 In less than 10 years the transformation led by director general Jussi Huttunen was complete, and the Institute had few routine tasks.It served the government as an expert organisation, performing internationally relevant research related to public health.Top quality research at KTL included early work on interferons by Kari Cantell, research on several bacterial vaccines by Pirjo Mäkelä's group, and collaboration with the World Health Organization to promote vaccination programs in developing countries.