Conflicts of interest
Natasha Halasa, MD, MPH receives grant support from Sanofi, Quidel, and speaker compensation from an education grant supported by Genentech. Sanofi also donated vaccines and influenza antibody testing for influenza vaccine trial. John Williams, MD is on the scientific board for Quidel, Independent Data Safely Monitoring Committee, GlaxoSmithKline, scientific advisory board ID Connect. All the other authors have no conflicts of interest to disclose.