Bacterial diseases kill millions of people worldwide each year, despite the advent of antibiotics 90 years ago. Emergence and spread of new and rapidly evolving pathogens with increased virulence, resistance to antibiotics, and transmissibility is increasingly straining efforts to manage infections and save lives. To combat this trend, we need a comprehensive and systematic understanding of the complex dynamics between the host, including host microbiota, and pathogen at every level of interaction?cellular, individual, and population levels. Our proposed studies leverage recent advances in sequencing technologies, innovative high-throughput molecular and multi-omic approaches, access to unique patient cohorts, and novel computational methods to characterize the genomes, transcriptomes, and individual strain-level interactions of bacterial pathogens with their hosts and other microbiota. In collaboration with renowned infectious disease researchers, clinicians, and epidemiologists, we will target critical gaps in our understanding of key infectious disease threats?uropathogenic E?scherichia coli (UPEC), carbapenem resistant ?Enter?obacteriaceae (CRE), and multidrug resistant enterococci. Specifically, we will i)? ?determine the gut-to-urinary tract dynamics of UPEC in recurrent urinary tract infections; ii) track the multiscale dynamics of antibiotic resistance gene proliferation - from individual microbiota to local and global circulation; and iii) characterize the dynamic functional reservoir of MDR enterococci. While our aims focus on ESKAPE pathogens, our goal is to pioneer and disseminate a ?comprehensive? ?technological framework and resources to empower clinical and research communities working to understand, diagnose, prevent, and treat infectious diseases.
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