The highest number of vaccinated sheep is reported in Kardzhali District, where it stands at 85.16% of all sheep. In the districts of Blagoevgrad, Vidin, Lovech, Montana, Plovdiv, Rousse, Sliven, Sofia-city, Haskovo, Shumen and Yambol are vaccinated more than 70% of the sheep. All sheep in the country that are over the age of 3 months are subjected to vaccination.