Received: 31 December 2020
Accepted: 17 March 2021
First Online: 7 April 2021
: This study was given ethical approval by the University of Jordan, the Jordanian Ministry of Health, and Vanderbilt University. Informed consent was obtained from parents and/or the guardians of the children enrolled in this study.
: Not applicable.
: 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 Advisory Board for Quidel, Independent Data Safely Monitoring Committee for GlaxoSmithKline, and Scientific Advisory Board for ID Connect. All of the other authors declare no competing interests.