What vaccination is required for pigs entering California?

The requirement for vaccination of pigs entering California is centered around the prevention of Pseudorabies. This viral disease is particularly significant in swine populations, and control measures, including vaccination, are essential for managing its spread. Pseudorabies can cause severe health issues in pigs and can lead to economic losses in the swine industry.

California has specific regulations in place to ensure the health and safety of its livestock. Vaccinating against Pseudorabies helps to safeguard not only the individual animals but also the overall health status of the swine herd in the state. Therefore, the answer correctly highlights the importance of this vaccination as a necessary precaution for pigs entering California.

Other vaccinations mentioned, such as Brucellosis or Equine Influenza, are not relevant to pigs, as Brucellosis mainly affects cattle and Equine Influenza pertains to horses. Thus, the requirement for Pseudorabies vaccination stands out as vital for pigs.