title: [Letter: Immunization against varicella (the priority of Pál Ferencz)].
mesh_terms: D002644:Chickenpox / Q000276:immunology*; D014645:Herpesvirus 3, Human / Q000276:immunology; D049673:History, 20th Century; D006814:Hungary; D014611:Vaccination / Q000266:history; D014765:Viral Vaccines / Q000266:history*
chemical_list: D014765:Viral Vaccines
vernacular_title: A varicella elleni védöoltásról (Ferencz Pál prioritása)