Animal health pros and bovine veterinarians working with dairy producers may find validation for some of their hypotheses in this research. The conclusion statement tells the story:
Viral infections play an important role in epidemic outbreaks of respiratory disease, and a strict winter seasonality is especially present for bRSV. Bovine coronavirus was most prevalent and significantly associated with M. haemolytica, suggesting a potential interplay between both pathogens. Highly different risk factors could be identified for the specific pathogens, which might help practitioners on the one hand to remove specific risk factors and on the other hand to make a better estimation of the most likely pathogen to target with control and therapy before sampling results are available.
Source: Journal of Dairy Science, March 2020. Abstract only. Link.