Ammon was responsible for evaluating the European Dedicated Surveillance Networks (DSN), which included the EURO TB and EURO HIV networks, eventually incorporating them into the framework of the ECDC.[8] In 2011 she was made Deputy Director of the Resource Management and Coordination unit.[9] A few years later, she led the European Scientific Conference on Applied Infectious Disease Epidemiology.[10] As part of the conference, in the wake of the Western African Ebola virus epidemic, Ammon oversaw sessions on food-borne diseases, zoonotic viruses and globalisation.[10] She succeeded Marc Sprenger as Acting Director of the ECDC on 1 May 2015.[11] She was subsequently appointed Director[12] on 22 March 2017 and took office on 16 June 2017.[13][14] In 2017 the ECDC and WHO announced that whilst cases of tuberculosis were on the decline in Europe, Tuberculosis in relation to HIV was on the rise.[15]