Influence of military preventive policy for recruit training on COVID-19 seroconversion: the IMPACT-COVID-19 study. - Stacey MJ; Ferentinos P; Koivula F; Parsons IT; Gifford RM; Snape D; Nicholson-Little A; Faustini S; Walsh NP; Lamb LE; O'Shea MK; Richter AG; et al. (BMJ military health, 2026)