Document detail
ID

doi:10.1186/s12889-024-18694-5...

Author
Fougerolles, Thierry Rigoine Baïssas, Théophile Perquier, Guillaume Vitoux, Olivier Crépey, Pascal Bartelt-Hofer, José Bricout, Hélène Petitjean, Audrey
Langue
en
Editor

BioMed Central

Category

Epidemiology

Year

2024

listing date

5/8/2024

Keywords
influenza public health policy vaccines and immunisation vaccination coverage rate modelling epidemiology influenza burden economic impact spain 2021/2022 italy individuals chronic uk conditions 200 gp visits direct vaccination medical health economic vcr public risk hospitalisations million adults deaths benefits costs
Metrics

Abstract

Background Seasonal influenza epidemics have a substantial public health and economic burden, which can be alleviated through vaccination.

The World Health Organization (WHO) recommends a 75% vaccination coverage rate (VCR) in: older adults (aged ≥ 65 years), individuals with chronic conditions, pregnant women, children aged 6–24 months and healthcare workers.

However, no European country achieves this target in all risk groups.

In this study, potential public health and economic benefits achieved by reaching 75% influenza VCR was estimated in risk groups across four European countries: France, Italy, Spain, and the UK.

Methods A static epidemiological model was used to estimate the averted public health and economic burden of increasing the 2021/2022 season VCR to 75%, using the efficacy data of standard-dose quadrivalent influenza vaccine.

For each country and risk group, the most recent data on population size, VCR, pre-pandemic influenza epidemiology, direct medical costs and absenteeism were identified through a systematic literature review, supplemented by manual searching.

Outcomes were: averted influenza cases, general practitioner (GP) visits, hospitalisations, case fatalities, number of days of work lost, direct medical costs and absenteeism-related costs.

Results As of the 2021/2022 season, the UK achieved the highest weighted VCR across risk groups (65%), followed by Spain (47%), France (44%) and Italy (44%).

Based on modelling, the 2021/2022 VCR prevented an estimated 1.9 million influenza cases, avoiding 375,200 GP visits, 73,200 hospitalisations and 38,400 deaths.

To achieve the WHO 75% VCR target, an additional 24 million at-risk individuals would need to be vaccinated, most of which being older adults and patients with chronic conditions.

It was estimated that this could avoid a further 918,200 influenza cases, 332,000 GP visits, 16,300 hospitalisations and 6,300 deaths across the four countries, with older adults accounting for 52% of hospitalisations and 80% of deaths.

An additional €84 million in direct medical costs and €79 million in absenteeism costs would be saved in total, with most economic benefits delivered in France.

Conclusions Older adults represent most vaccine-preventable influenza cases and deaths, followed by individuals with chronic conditions.

Health authorities should prioritise vaccinating these populations for maximum public health and economic benefits.

Fougerolles, Thierry Rigoine,Baïssas, Théophile,Perquier, Guillaume,Vitoux, Olivier,Crépey, Pascal,Bartelt-Hofer, José,Bricout, Hélène,Petitjean, Audrey, 2024, Public health and economic benefits of seasonal influenza vaccination in risk groups in France, Italy, Spain and the UK: state of play and perspectives, BioMed Central

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