selected publications academic article Sequential intrahost evolution and onward transmission of SARS-CoV-2 variants 2023-12-1 Hotspots for SARS-CoV-2 Omicron variant spread: Lessons from New York City 2022-7-1 Robust clinical detection of SARS-CoV-2 variants by RT-PCR/MALDI-TOF multitarget approach 2021-1-1