(Helmholtz Zentrum München – German Research Center for Environmental Health) Human herpesvirus 6 infects most people all over the world. It is usually well controlled by the body, but it can cause diseases in immunocompromised individuals. As reported in PLOS Pathogens, scientists at Helmholtz Zentrum München, member in the German Center for Infection Research, have now identified virus structures that can be attacked by killer T cells — a possible approach for new therapies.