Résumé : Chickens were immunised using a vaccinia recombinant virus (vaccinia-Italien-F), expressing the F protein of Newcastle disease virus (NDV). Immunisation was successful using either TK cells infected with the vaccinia-Italien-F virus, the recombinant virus grown in tk cells and inoculated intra-cerebrally in one-day-old chickens or the recombinant virus given by wing-web to adult chickens after adaptation by alternate passage in chick embryo fibroblasts and chickens. The use of recombinant viruses expressing the F protein of NDV as vaccines would allow joint application of vaccination and eradication programmes for NDV. Therefore, recombinant viruses obtained in chickens virus vectors are needed. © 1988, Taylor & Francis Group, LLC. All rights reserved.