The Wikipedia snippet below is not backed by a reliable source. Can you find one?
Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!
In page Vaccine:
"The DIVA strategy has been applied in various countries to successfully eradicate pseudorabies virus from those countries. Swine populations were intensively vaccinated and monitored by the companion diagnostic test and, subsequently, the infected pigs were removed from the population. Bovine herpesvirus 1 DIVA vaccines are also widely used in practice.[citation needed] Considerable efforts are ongoing to apply the DIVA principle to a wide range of infectious diseases, such as classical swine fever,[5] avian influenza,[6] Actinobacillus pleuropneumonia[7] and Salmonella infections in pigs.[8]