Professor Zadoks is a veterinarian and molecular epidemiologist who has worked on group B Streptococcus (GBS) for over a decade. GBS’s scientific name, Streptococcus agalactiae, refers to its impact on dairy cattle, where it causes mastitis and agalactia. Building on her background in dairy herd health and bovine mastitis, Prof. Zadoks developed a portfolio of GBS research spanning Europe, the Americas, Africa, Asia, and Australia, covering animals as well as people. Her work ranges from molecular and genomic epidemiology investigations to challenge studies and the development of diagnostics, vaccines, and control recommendations for different host species. With international collaborators and postgraduate students, she documented the emergence and re-emergence of GBS in cattle, fishes, and camels, showing that there are no strict host-species barriers, and that we can only understand the GBS pangenome and its evolution using a One Health approach. Her work has been funded by academic, government, philanthropic, and industry bodies, and she is a collaborator on the global JUNO project. She takes an interdisciplinary approach, working with medical, genomic, aquaculture, bioengineering and social science experts, among others; has published over 150 peer-reviewed papers; and is a regular international speaker on GBS and One Health.