Pope Francis prayed Saturday for an end to the coronavirus pandemic and the development of a vaccine as he presided over an outdoor gathering that signaled a semblance of normalcy returning to the Vatican after a coronavirus lockdown lasting more than two months. Francis was joined in the Vatican Gardens by a representative sampling of people on the front lines of the emergency: a doctor, a nurse, a hospital chaplain, a pharmacist, a journalist and a civil protection official. A recovered COVID-19 patient, a person with a relative who died during Italy’s outbreak, and the parents of a baby born during the emergency also were among the pope’s more than 100 guests for the prayer at the grotto dedicated to the Virgin Mary.