Simpson et al. 2020, Can exercise increase infection susceptibility, consensus

Review and reconciliation article from the leading exercise-immunology groups, presenting converging positions rather than a formal consensus process. Infection susceptibility in athletes is multifactorial, and whether exercise itself causally increases infection risk, independent of travel, crowding, sleep loss, life stress and low energy availability, remains unresolved. A deliberately cautious reconciliation of the J-curve and its critics. Strong (reconciliation review).