This study is a two-stage, unblinded, strain-randomised Controlled Human Infection Model (CHIM). It is multicentre, star clinical trials

A staged dose-finding and challenge/rechallenge study of Staphylococcus aureus nasal colonisation in healthy adults

This study looks at how a common bacterium called Staphylococcus aureus lives in people's noses. Researchers will put a small amount of the bacteria into healthy adult volunteers' noses to see how it settles and if it can protect them from future infections. It aims to help develop new ways to prevent infections.