Department of Pediatric;
Faculty of Medicine;
Tanta University;
Tanta 31527;
Algharbia;
Egypt;
Department of Pediatrics;
University Medical Center;
Arabian Gulf University;
Manama 26671;
Bahrain;
Microbiology Section;
Pathology Department;
Salmaniya Medical Complex;
Manama 12;
Bahrain;
Department of Microbiology;
Royal College of Surgeons in Ireland-Bahrain;
Bahrain;
Busaiteen 15503;
Muharraq;
Bahrain;
Department of Chest Diseases;
Tanta University;
Tanta 31527;
Algharbia;
Egypt;
Department of Pulmonology;
University Medical Center;
Arabian Gulf University;
Manama 26671;
Bahrain;
Department of Tropical Medicine;
Tanta University;
Tanta 31527;
Algharbia;
Egypt;
Department of Gastroenterology;
University Medical Center;
Arabian Gulf University;
Manama 26671;
Bahrain;
COVID-19; SARS-CoV-2; Gastrointestinal diseases; Children; Dysbiosis; Faecal-oral transmission;