Two years of on-site influenza vaccination strategy in an Italian university hospital: main results and lessons learned

Figures & data

Figure 1. Vaccination coverage (%) of Bari Policlinico healthcare workers (HCWs), per hospital area (medical, surgical, services) for the influenza seasons of 2017/18 and 2018/19.

Table 1. Characteristics of the vaccinated healthcare workers (HCWs) per influenza season (2017/18 and 2018/19)

HCW characteristics	2017/18 season (n = 482)	2018/19 season (n = 799)	p-value
Age; mean±SD (range)	45.5 ± 13.2 (25.0–70.0)	45.3 ± 11.9 (24.0–69.0)	.789
Female sex; n (%)	254 (50.8)	424 (53.1)	.612
Professional category; n (%)			.167
• Physician	295 (61.3)	563 (70.6)
• Nurse	48 (10.0)	99 (12.4)
• Other	139 (28.7)	136 (17.0)
At least one chronic disease*; n (%)
• Allergy	237 (49.2)	385 (48.3)	1.000
• Cardiopathy	102 (21.2)	179 (22.4)
• Endocrinopathy	60 (12.4)	95 (11.9)
• Respiratory disease	59 (11.8)	89 (11.2)
• Gastrointestinal disease	14 (2.9)	34 (4.3)
• Tumor	14 (2.9)	19 (2.4)
• Nephropathy	7 (1.5)	10 (1.3)
• Other	2 (0.4)	6 (0.7)
	26 (5.4)	38 (4.7)

*Many HCWs had multiple diseases.

Figure 2. Vaccination coverage (%) in the OUs offering on-site vaccination during both the 2017/2018 and the 2018/19 influenza seasons.

Table 2. Analysis of the determinants of immunization (YES/NO) in a multivariate logistic regression model

Determinant	aOR	95%CI	p-Value
Sex (male vs. female)	1.36	1.15–1.61	.000
Age (years)	1.00	0.99–1.01	.424
Area
• Surgery vs. medical	0.57	0.46–0.71	.000
• Service vs. medical	0.88	0.69–1.14	.345
Profession
• Nurse vs. physician	0.17	0.13–0.21	.000
• Auxiliary staff vs. physician	0.20	0.14–0.29	.000
• Other vs. physician	0.78	0.58–1.03	0.084
OU targeted by the on-site strategy (YES/NO)	1.39	1.05–1.84	.021

Goodness-of-fit chi-squared = 858.8; p-value = .926

Table

CDC	Center for Disease Control and Prevention
HCWs	Healthcare workers
OU	Operative unit
VC	Vaccine coverage