Influenza Vaccination and COPD Phenotypes

The aim of this study is to determine responses of the immune system to the annual flu vaccination in people with COPD who experience frequent or infrequent exacerbations and healthy participants. We will collect blood and saliva immediately before and one month after flu vaccination at GP surgeries in the Autumn/Winter period. By measuring how quickly antibodies (that provide protection against infection) develop in the blood after vaccination we can provide important new information to help confirm whether those prone to COPD flare ups have weaker immune systems.