Frontline health care workers across the U.S. are days away from being offered the shots. They couldn’t be arriving at a more crucial moment, with Covid-19 cases at their highest level since the pandemic began a year ago and many hospitals overwhelmed. … While there is vaccine hesitancy among health care workers as well as the general public — in one study, 36% of nurses said they would not take the vaccine — many other frontline medical workers, exhausted by the pandemic and the many risks they’ve taken to provide care these long months, say the shots can’t come soon enough.