Epidemiology and eradication of infectious bovine rhinotracheitis/infectious pustular vulvovaginitis (IBR/IPV) virus in Finland

Table 1 Mean, standard deviation (SD), range and number of positive results of number of serum samples tested for antibodies against BHV-1 in 1965–1989

Period	No of samples examined annually
	Mean	SD	Range	Nr positives
1965 – 1973	68	54	4 – 159	10¹
1974 – 1985	661	158	335 – 890	0
1986 – 1989	2126	1126	523 – 2947	0

ISSN: 1751-0147