A transmission electron microscope image shows SARS-CoV-2, also known as the 2019 novel coronavirus, which causes COVID-19, isolated from a patient in the United States.
Note the crown-like spikes on the outer edge of the virus, hence the term "coron (NIAID-RML)LOS ANGELES - Over the past year, studies have consistently shown that children and adolescents have lower incidence and fewer severe COVID-19 cases than adults.