Among the 54 participants in cohorts 1 to 4 who were infected with RSV , active treatment was associated with a lower viral load ( adjusted mean , 250.7 vs. 757.7 log10 plaque-forming-unit equivalents [ PFUe ] hours per milliliter ; P < 0.001 ) , lower total mucus weight ( mean , 6.9 g vs. 15.1 g ; P = 0.03 ) , and a lower AUC for the change from baseline in symptom scores ( adjusted mean , -20.2 vs. 204.9 hours ; P = 0.005 ) .