Avian Influenza Vaccines: An Informational Overview

Introduction

Avian influenza vaccines are biological products developed to protect birds—especially poultry—against avian influenza, a viral disease caused by influenza A viruses. These vaccines help reduce disease spread, severe outbreaks, and mortality among bird populations and play a role in managing public health risks associated with certain strains.

What Avian Influenza Is

Avian influenza, commonly known as bird flu, refers to infections in birds caused by influenza A viruses. Some strains cause mild illness, while others—such as highly pathogenic variants—can lead to serious disease and widespread mortality in domestic flocks. Because influenza viruses can mutate, monitoring and vaccination help control outbreaks and limit economic loss.