John is an epidemiologist with experience in working in infectious and non-infectious disease epidemiology. His early work concerned aspects of child and maternal health; investigating the effects of obesity and maternal age on pregnancy outcome. He is experienced in various aspects of data analysis, having conducted analysis with data from varying sources including Hospital Episode Statistics, ONS mortality data and routine infectious disease laboratory reports.
John worked at Public Health England for a number of years, initially in surveillance of HIV but moved to surveillance of gastrointestinal infections for the majority of the time, focusing mainly on surveillance of norovirus infections . His PhD was aimed at understanding the epidemiology of norovirus outbreaks in hospitals. He currently works as a lecturer in health protection at the University of Liverpool and is a member of the Health Protection Research Unit in Gastrointestinal Infections.
John also runs and teaches on the Veterinary Epidemiology and Public Health Module, part of the Life Sciences programme of study. His current role also involves providing expertise in epidemiological analysis and scientific support for PhD students and post-doctoral researchers working on various pathogens causing gastrointestinal disease.