there were no statistically significant differences in rates or distributions of infection with individual viruses or with all viruses over the first three or six months or during the second six months of life in the two groups , nor were there statistically significant differences in rates or distributions of disease of the upper and lower respiratory tract or total respiratory disease , except for decreased disease of the lower respiratory tract in bottle-fed infants in the second six months .
C0012634
disease
C0035204
disease of the