New York: A panel of experts set up to advise the United States on how best to allocate COVID-19 vaccines said on Tuesday that high risk workers in healthcare facilities and first responders should get them first as part of a recommended four-phase rollout plan.The first phase should also include vaccinating people with underlying conditions that put them at significantly higher risk of contracting severe COVID-19, as well and older adults living in long-term care facilities or overcrowded settings, the panel recommended.The second phase should include workers in industries essential to the functioning of society and at substantially high risk of exposure, teachers and school staff, people with underlying conditions that put them at.