Registered Nurse Cass Petrykowski, center, waits after receiving the second dose of the Pfizer …

Registered Nurse Cass Petrykowski, center, waits after receiving the second dose of the Pfizer COVID-19 vaccine at UMC’s Delta Point building in Las Vegas, on Monday, Jan. 4, 2021. (Erik Verduzco / Las Vegas Review-Journal) @Erik_Verduzco