Bunn C, McKercher D G, Starkey A L, Wada E M
J Am Vet Med Assoc. 1975 Aug 1;167(3):229-30.
Of 1,224 serums from slaughtered sows from central Illinois, 52 (4.25%) were found to be positive for pseudorabies neutralizing antibody.
在从伊利诺伊州中部屠宰的母猪采集的1224份血清中,发现52份(4.25%)伪狂犬病中和抗体呈阳性。