TY JOUR TI ANALYSIS OF THE INCIDENCE OF A NEW CORONAVIRUS INFECTION AMONG EMPLOYEES OF A MEDICAL INSTITUTION KW new coronavirus infection KW incidence KW medical workers JO CASPIANJOURNALOF MEDICINE AND PHARMACY AU Petrova, O.V. AU Tverdokhlebova, D.K. AU Smeltsova, E.V. AU Kurashenko, O.O. PY 2022 IS 3 PB Astrakhan State Medical University