COVID-19(10) varicella.(9) Vaccines(6) Cost-benefit analysis(6) Economy in health care and organizations(6) pediatrics(4) Hospitalization(3) Outpatient Care(3) Burden of disease(3) education(2) SARS-CoV-2(2) zoonoses.(2) Child(2) respiratory syncytial virus.(2) pediatrics.(1) Mycobacterium bovis(1) SARSCoV-2(1) pets(1) chILD.(1) Post(1) cirrhosis(1) Neoplasms.(1) Hypereosinophilia(1) coronavirus(1) Proteinuria(1) Rickettsia slovaca infection(1) PCR(1) responsible tenure(1) health care staff(1) habits.(1)