on two occasions at an interval of 28 to 40 days, sampling for serological testing has been carried out on a number of breeding pigs sufficient to detect a prevalence of swine vesicular disease of 5 % with a confidence interval of 95 % and the results have been negative, and
seroloogiliste testide jaoks on võetud kahel korral intervalliga 28–40 päeva proove aretussigade selliselt hulgalt, mis on piisav sigade vesikulaarhaiguse 5 % levimuse avastamiseks 95 % usaldusvahemikuga, ja tulemused on olnud negatiivsed ning