Contract for the Provision of Research into Exertional Heat Illness - VAX

This is a requirement identified by HQ AITC to determine the time‑course and magnitude of exertional heat illness (EHI) risk following vaccination in Army trainees. The study will quantify thermal strain at +24 h and +48 h post‑vaccination under controlled environmental conditions, across mild (influenza‑only) and moderate (common vaccine combination) vaccine groups. This study is a follow on to another MOD funded project delivered by the same university, which first identified a ~3.5× increase in severe EHI risk post vaccination during arduous activity. This follow on study is required to translate that observational risk signal into operational policy with quantified, time resolved risk.