genomics, immunology, microbiology
Our lab is focused on understanding the adaptive changes in S. aureus that take place during infection. An integrated approach is used that incorporates new technologies to detect low abundance variants in pooled bacterial populations, traditional bacterial and evolutionary genetics, and molecular population genetic analysis. A special focus of these studies is on the identification of within-host variation in the agr locus, a global regulator of virulence in S. aureus. agr mutants are attenuated for virulence in animal models of infection, and the majority of clinical isolates have a functional agr locus. However, agr-defective strains are frequently recovered from patients with a variety of hospital-acquired infections, suggesting that the occurrence of these strains may be favored under certain in vivo conditions. This work is motivated by practical questions in infectious diseases (such as the best use of antimicrobials that target agr and virulence), as well as more basic yet closely intertwined questions, such as how to explain the alterations that are responsible for adaptive changes atdifferent stages of S. aureus infections.
Learn more about my research.
A Phase III Randomized Double-blind Placebo-controlled Multicenter Study in Adults to Determine the Safety Efficacy and Immunogenicity of AZD1222 a Non-replicating ChAdOx1 Vector Vaccine for the Prevention of COVID-19
A Phase 1/2 Placebo-Controlled Randomized Observer-Blind Dose-Finding Study to Describe the Safety Tolerability Immunogenicity and Potential Efficacy of SARS CoV 2 RNA Vaccine Candidates Against COVID 19 in Healthy Adults
Influenza & other respiratory viruses. 2020 Sep ; 14(5):499-506
Cell host & microbe. 2020 May 13; 27(5):809-822.e6