children(21) COVID-19(19) SARS-CoV-2(18) herpes zoster(16) coronavirus disease(16) acute respiratory syndrome(14) Patient(14) Infection(10) disease(10) coronavirus(10) Vaccine(9) Varicella-Zoster Virus(8) acute respiratory syndrome coronavirus(8) Meningitis(8) immunocompetent children(8) Coronavirus disease 2019(8) polymerase chain reaction(8) Varicella zoster virus(8) severe acute respiratory syndrome Coronavirus(8) Varicella vaccine(8) vaccination(7) Child(7) conducted(6) evaluated(6) Hospitalization(6) healthy(6) immunogenicity(6) caused(6) determine(6) pediatric(6)