In mid-March, Izabella Pena received a WhatsApp text from a friend in Indianapolis, Indiana. “He said, ‘Oh, I got your audio message from a priest in rural São Paulo,’” remembers Pena, a postdoc in Department of Biology Professor David Sabatini’s lab at the Whitehead Institute for Biomedical Research. Pena had recorded the five-minute audio message about risk groups and the novel coronavirus SARS-CoV-2 for her family’s text thread after she heard one-too-many comments about how only the elderly caught the more severe forms of Covid-19. She never imagined it would spread…