The US has large stocks which could be used along with the Pirbright and EU stocks. Commercial companies can make them too. Vaccinations work equally well in all species and there are no special problems with sheep or pigs. As evidence they had been eaten and their products such as milk drunk without any adverse effects for 40 years in the UK before the ban on vaccination started in the early 90's. Plus we already vaccinate for MANY other things.
Tests now exist for distinquishing vaccinated antibodies in an animal from an infected animal.
The UBI diagnostic kits have been vigorously tested and validated, and they are manufactured in a GMP facility with strict quality assurance and quality control. In this age of genomics, they can quickly synthesize designer vaccines according to the viral genomic sequences. So, even in the face of an attack by a virus of unexpected serotype, they can keep ahead of the virus for protection of the animals. Fred Brown confirmed that no reinfection of other animals had taken place in tests. Native animals and vaccinated carriers had been penned together and it was very difficult to get infection.