Correction: In “Effects of modified-live bovine viral diarrhea virus vaccines containing either type 1 or types 1 and 2 BVDV on heifers and their offspring after challenge with noncytopathic type 2 BVDV during gestation,” published May 15, 2006 (2006;228:1559–1564), the BVDV strain selected for use in the viral challenge was incorrectly identified as type 2b BVDV strain. The correct information is as follows:
BVDV challenge—The type 2a BVDV strain (94B-5359a) selected for use in the viral challenge was isolated from a persistently infected calf that had been born during an outbreak of BVDV disease in Wyoming.
