Maciej’s research interests revolve around the evolution and spread of infectious disease and include influenza dynamics and antigenic drift; the evolution of antimalarial resistance and antibiotic resistance; and detecting recombination and re-assortment in infectious pathogens. He is currently running a large-scale serial seroepidemiology study on human influenza in southern Viet Nam, which has amassed an age-stratified, time-stratified and location-stratified serum bank with over 40,000 samples—by far the largest seroepidemiological study of its kind to date. Maciej is also leading a community ILI study in Ho Chi Minh City. The OUCRU modelling group focuses on malaria and dengue modelling, as well as sequence analysis for human influenza, avian influenza, and norovirus. Results from the modelling work have been used to advise the World Health Organization (WHO) on future strategies in dengue vaccination and the National Institutes of Hygiene and Epidemiology in Hanoi on influenza vaccination in Viet Nam. Maciej first joined OUCRU as a Senior Informatics Fellow with support from the CGGH.