Dr Klein was appointed Lecturer in Endemic, Enzootic and Emerging Infectious Diseases at the University of Bristol Veterinary School in March 2024. Her research focuses on virology, immunology, and cell biology, with particular interest in viral transmission mechanisms and the development of immune responses to globally important pathogens such as HIV-1, SARS-CoV-2, and influenza A virus (IAV). She first joined the University of Bristol in April 2020 as a Postdoctoral Associate, contributing to research on SARS-CoV-2 entry mechanisms, the development of broad-spectrum antivirals, and host–virus interactions in influenza. Prior to this, Dr Klein held postdoctoral positions at the University of Western Ontario (Canada), Case Western Reserve University (USA), and Imperial College London (UK), where she studied HIV–host interactions and vaccine development.