Communications clients have included Social Impact/USAID, Internews, Johns Hopkins Health Communication Capacity Collaborative (HC3), Medecins Sans Frontieres (MSF), United Nations International Fund for Agricultural Development (IFAD), United Nations Mission to Liberia (UNMIL), Save the Children, American Refugee Committee, Fondation International du Banc d'Arguin, SOS Children's Villages and others. 

Katherina co-organized and wrote the final report of Effective Public Health Communication in an Inter-Connected World: Enhancing Resilience to Health Crises, an expert public health convening at the Bellagio Center in Italy, supported by The Rockefeller Foundation in October, 2015. The event drew on lessons learned from the Ebola outbreak, SARS, H1N1, HIV/AIDS and the earthquakes of Haiti and Nepal. She also co-designed the first ever health journalism training program for Liberia, in collaboration with Internews, HC3 and USAID, and led a six-month fellowship for Liberian journalists to receive specialist training in health reporting, medical knowledge and anatomy.