A research by (Vanopdenbosch et al., 1992a) published a study that torovirus respiratory infections emerges mainly in the first month of life and from 4 to 6 months of age in the autumn season peak. In all those infections, about 25% infections lead to sudden death. Besides other causes like diarrhea, pneumonia and respiratory problems, central nervous system related symptoms have also been reported in some incidental cases.Vanopdenbosch, E., Wellemans, G., Oudewater, J., nd Petroff, k. (1992a). Vlaams Di-ergennesk. Tijdschr. 61, 1-7.
