The weakest of these links is the history of a recent viral illness. Noncontrolled studies report that 17-33% of patients recall a recent viral illness.
[emedicine.medscape.com]
Patients frequently present with head trauma, lifting incident, flying, scuba diving, loud noise, recent viral illness (flu), upper respiratory illness (30%), surgeries, and
[workplaceintegra.com]
Studies of patients with ISSHL show a moderate prevalence of recent viral-type illness.
[emedicine.medscape.com]