• Soha H Shosha, Dana I Ajlan, and Rana Al-Ghatam.
• Primary Health Care Department, Bahrain Defense Force Hospital, Rifaa, Bahrain.
• Medicine (Baltimore). 2022 Jan 14; 101 (2): e28479e28479.

AbstractTo 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 < .001). Influenza vaccination also reduced total length of hospital stay (6.2 days vs 12.7 days, P < .05) and need for intensive care unit admission among the patients.Influenza vaccine reduces both the incidence of affection as well as the overall burden of COVID-19. This is of particular importance for people working in the healthcare field during the serious COVID-19 pandemic.Copyright © 2022 the Author(s). Published by Wolters Kluwer Health, Inc.

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