by Jennifer Brown, University of Iowa This scanning electron microscope image shows SARS-CoV-2 (yellow)—also known as 2019-nCoV, the virus that causes COVID-19—isolated from a patient, emerging from the surface of cells (blue/pink) cultured in the lab. Credit: NIAID-RML In a new study assessing the potential of a single-dose, intranasal COVID-19 vaccine, a team from the University...