# Optimizing influenza prevention: a systematic review of the cost-effectiveness of pediatric vaccination programs and vaccine types

## TL;DR

This study reviews the cost-effectiveness of pediatric influenza vaccines, finding that quadrivalent vaccines are most effective in reducing transmission and healthcare costs.

## Contribution

The study systematically compares different vaccine types and their cost-effectiveness in children under 18.

## Key findings

- Most studies show pediatric vaccination is cost-effective for reducing influenza transmission.
- Quadrivalent vaccines are found to be more cost-effective than trivalent or live-attenuated vaccines.
- Cost-effectiveness depends on local demographics, vaccine type, and economic conditions.

## Abstract

Seasonal influenza is a major cause of illness and death worldwide. Vaccination remains the cornerstone of prevention, with options including trivalent inactivated (TIV), quadrivalent inactivated (QIV), and live-attenuated vaccines. This study aimed to provide a systematic overview of the cost-effectiveness of pediatric influenza vaccination programs, with a particular focus on comparing different vaccine types.

A comprehensive literature search was conducted in PubMed, Web of Science, Scopus, and Cochrane databases for records published between 2013 and 2024. The target population included individuals younger than 18 years. The primary research question was: Which influenza vaccines, trivalent, quadrivalent, or live-attenuated, are more cost-effective, and how does introducing seasonal vaccination for children under 18 influence healthcare costs and health outcomes? Data extraction was performed using a structured Excel spreadsheet.

This review included 33 studies that met the inclusion and exclusion criteria. Most studies support the conclusion that vaccinating children is an effective and cost-effective strategy for reducing influenza transmission. Cost-effectiveness varied depending on epidemiological and demographic factors, the type of vaccine used, and age group differences, which were influenced by the analytical perspective and local health and economic conditions.

This review confirms that pediatric influenza vaccination is a cost-effective intervention, particularly with quadrivalent vaccines. The optimal choice of vaccine and strategy should be tailored to local population needs and economic conditions to maximize public health benefits.