3:08:55 or page 97: Self Amplifying mRNA Vaccines associated with shedding. ??Apparently, all we know is that in a Rabbit Hemorrhagic disease (RHD) ..."The recombinant viruses showed a limited horizontal transmission capacity, either by direct contact or in a flea-mediated process, promoting immunization of contact uninoculated animals." **Bing "recombinant dna"