Factors Associated with Seasonal Influenza Vaccination Among Nursing Staff of Three Teaching Hospitals Affiliated to Kerman University of Medical Sciences, Iran

Abstract

Background: Although seasonal influenza vaccination decreases infection rate and associated complications, its coverage rate is suboptimal in healthcare workers worldwide. Objectives: The present study aimed at assessing the predictors of influenza vaccination and reasons for accepting or refusing it among nursing staff. Methods: The present study was conducted from February to March 2019 on nurses of three teaching hospitals affiliated to Kerman University of Medical Sciences in the Southeast of Iran. Data were collected using a validated questionnaire, including demographic data, knowledge, and attitude toward influenza and its vaccine, and reasons for accepting or refusing the vaccine. Data were analyzed by SPSS version 22. Independent samples t- and the chi-squared tests and the binary logistic regression were employed for data analysis. Results: The influenza vaccination coverage rate was 10.1% among the nursing staff. Male gender (adjusted odds ratio (AOR) = 4.77, 95% confidence interval (CI) =2.13 - 10.64), receiving a recommendation for influenza vaccination in hospital (AOR = 1.86, 95% CI = 1.06 - 3.26), influenza vaccination of the family members (AOR = 2.61, 95% CI = 1.55 - 4.41), and a higher score of attitude toward influenza vaccination (AOR = 1.05, 95% CI = 1.03 - 1.07) increased the likelihood of influenza vaccination in the nursing staff. Fear of vaccine adverse effects (64.7%), lack of trust in vaccine manufacturers (36.0%), and being healthy (29.7%) were the most common reasons for refusing vaccination. Likewise, self-protection (79.6%), patient protection (73.0%), and family protection (72.4%) were the most common reasons for undergoing vaccination. The odds of influenza vaccine uptake was four times more among males than females (AOR = 4.77, 95% CI = 2.13 - 10.64), and odds of influenza vaccination was 1.86 times more among nursing staff receiving recommendations for influenza vaccination in hospital than the ones not receiving such recommendations (AOR = 1.86, 95% CI = 1.06 - 3.26). Also, odds of influenza vaccination increased 2.73 times in nursing staff whose family members received influenza vaccine (AOR = 2.61, 95% CI = 1.55 - 4.41). Furthermore, the model showed that one unit increase in the attitude score increased odds of influenza vaccination by 1.05 units (AOR = 1.05, 95% CI = 1.03 - 1.07). Conclusions: The influenza vaccination rate was suboptimal among the nursing staff. Also, there were poor knowledge and improper attitude toward influenza and its vaccine among healthcare workers. Therefore, appropriate policies should be made at national and regional levels on increasing the rate of influenza vaccination.