Among infants of atopic mothers , a statistically significant protective effect of DHA treatment was observed on phlegm with nasal discharge or nasal congestion ( 0.78 ; 95 % CI , 0.60-1 .02 ) and fever with phlegm and nasal discharge or nasal congestion ( 0.53 ; 95 % CI , 0.29-0 .99 ) , adjusting for potential confounders .