still for the attenuation of a koronavirusliknande kalvdiarrevirus for framstellning of kalvdiarrevaccin

摘要

1401565 Calf diarrhea vaccine UNIVERSITY OF NEBRASKA REGENTS OF 23 Oct 1973 [30 Oct 1972] 49253/73 Heading A5B A calf diarrhea vaccine comprises an attenuated or inactivated coronavirus-like calf diarrhea virus. The vaccine may be in the form of a combination vaccine comprising inactivated coronavirus and reovirus, both of which are prepared by inactivating a live virus, either unaaatenuated or attenuated, by chamicals, radiation or heat. Coronavirus can also be combined with bovine adenovirus, bovine virus diarrhea, or other bovine pathogens such as E. Coli or clostridia sp.