In each study group , median ( range ) RSV load ( log@ copies/mL ) decreased at a similar rate from baseline to study day @ -LSB- motavizumab @ mg/kg : @ ( @-@ @ ) to @ ( @-@ @ ) ; motavizumab @ mg/kg : @ ( @-@ @ ) to @ ( @-@ @ ) ; placebo : @ ( @-@ @ ) to @ ( @-@ @ ) -RSB- .