The present invention is directed to the use of a live, recombinant leporipox
virus comprising exogenous DNA, which is operably linked to at least one expression
control element and which is incorporated in a non-essential region of the virus
genome, in the manufacture of a vector vaccine for the treatment and/or prophylaxis
of infectious diseases in non-lepori species. The invention furthermore relates
to a live, recombinant leporipox virus comprising exogenous DNA operably linked
to at least one expression control element and incorporated in a non-essential
region of the virus genome characterized in that said exogenous DNA encodes at
least one antigen of a non-lepori pathogen. Due to its restricted host-range the
recombinant leporipox virus is non-pathogenic in non-susceptible hosts such as
non-lepori vertebrates. Vaccination with said recombinant leporipox virus induced
an antigen or immunogenic response in the vaccinated non-lepori host even though
productive replication of the virus was not observed in the host.