Scientists explore a simple question with big implications: Can people be reinfected by COVID-19?
In Canada, experts stress that organized monitoring for changing immunity levels to COVID-19 – a model of the novel coronavirus SARS-CoV-2 seen here at the Helmholtz Centre for Infection Research in Braunschweig, Germany, on May 8, 2020 – should begin now to deliver meaningful data down the road. JENS SCHLUETER/AFP/Getty Images As scientists try to…