The coronavirus pandemic has been unprecedented in its impact, leaving no aspect of life  unaffected from its arrival in late 2019. From day-to-day impacts on work, school, social  gatherings, and travel, to larger shockwaves to the world’s economy and health care systems,  COVID-19 is a once-in-a-lifetime crisis on the global stage. For health care workers caring  for sick coronavirus patients: How do we allocate scarce resources? Scientists around the  world are working quickly to develop vaccines for COVID-19. When they are successful, and  a vaccine becomes available, who should get the first shot? Briefly discuss it.