COVID-19(10) varicella.(9) Economy in health care and organizations(6) Vaccines(6) Cost-benefit analysis(6) pediatrics(4) Burden of disease(3) Hospitalization(3) Outpatient Care(3) respiratory syncytial virus.(2) education(2) SARS-CoV-2(2) zoonoses.(2) Child(2) Prevalence.(1) Adolescence(1) hearth diseases(1) MIS-C(1) Therapy.(1) Hepatic abscess(1) Mycobacterium bovis(1) pediatrics.(1) SARSCoV-2(1) pets(1) chILD.(1) Post(1) Neoplasms.(1) cirrhosis(1) Hypereosinophilia(1) coronavirus(1)