Joseph Lewnard studies the transmission dynamics of infectious disease agents and the effectiveness of interventions such as vaccination. To these ends, he uses mathematical and statistical modeling and collaborate closely with investigators leading field studies and disease surveillance. Much of his work centers around the impacts of pneumococcal conjugate vaccines on Streptococcus pneumoniae (an antigenically-diverse pathogen and leading cause of invasive disease, pneumonia, and upper respiratory infections), and lessons for future vaccines targeting limited subsets of pathogen strains. Other ongoing projects address the selection of antimicrobial resistance in pneumococcus, group A Streptococcus, and other commensal pathogens; the re-emergence of vaccine-preventable diseases such as mumps in recent years; and the transmission ecology and prevention of various neglected tropical diseases.
Research Expertise and Interest
infectious diseases, antimicrobial resistance, public health surveillance, mathematical modeling, Bayesian inference