Senior Community Health Nurse Jocelyn Castillo prepares to give Cole Nisson, 18, of Henderson a flu shot at the Southern Nevada Health District in Las Vegas office Wednesday, Jan. 2, 2019. K.M. Ca …

Senior Community Health Nurse Jocelyn Castillo prepares to give Cole Nisson, 18, of Henderson a flu shot at the Southern Nevada Health District in Las Vegas office Wednesday, Jan. 2, 2019. K.M. Cannon Las Vegas Review-Journal @KMCannonPhoto