Does influenza vaccination help reduce incidence of COVID-19 infection among hospital employees?

Abstract

To facilitate the understanding of the interaction between severe acute respiratory syndrome coronavirus 2 causing the corona virus disease 2019 (COVID-19) and other pathogens causing respiratory system affection we investigated the effect of influenza vaccination on the incidence and severity of COVID-19 among members of staff working in the Bahrain Defense Force Hospital. All staff members working in the hospital between February 2020 and March 2021 were divided into 2 main groups based on whether or not they received influenza vaccination. None of the participants had received any of the COVID-19 vaccines throughout this time period. The records of each were scrutinized to see the effect of influenza vaccination on incidence and severity of COVID- 19. Severity measures were: need for hospital and intensive care unit admission and total length of hospital stay. Incidence of affection with COVID-19 was much lower in the vaccinated group (3.7% vs 8.1%, P