Dr. Bloch is originally from South Africa where he completed his medical school (University of Cape Town) and clinical training. Following completion of a combined residency in Anatomic and Clinical Pathology (Tufts Medical Center), post-graduate fellowship in Transfusion Medicine (University of California San Francisco [UCSF]) and Masters in Global Health (UCSF) he continued research at Blood Systems Research Institute, while continuing to teach at UCSF in Laboratory Medicine and Global Health Sciences. He joined the faculty at Johns Hopkins University in the Department of Pathology in 2015.
Dr. Bloch's major research focus is in neglected and emerging infectious diseases particularly in the context of blood transfusion safety. He has a longstanding interest in babesiosis, a tick-borne parasitic infection that is endemic to parts of the United States. Babesia is globally ubiquitous, yet lack of awareness, in part due to historically limited diagnostic tools, has impeded greater recognition of its role in human disease. Dr. Bloch has participated in studies to develop both antibody and molecular tests for detection of Babesia. The studies have also been used to understand the biology of Babesia infection as well as to conduct surveillance outside of the US.
The author of 58 peer-reviewed publications, Dr. Bloch is an active member of the International Society of Blood Transfusion infectious disease working party (co-chair parasite sub-group) and AABB (formerly American Association of Blood Banks). He has consulted on transfusion policy and development of clinical transfusion guidelines, and hopes to use blood transfusion as a platform for infectious disease surveillance so as to guide programmatic support, particularly in low-resource settings.