The objective of this study is to demonstrate the clinical performance of the Sofia RSV FIA with specimens from symptomatic pediatric subjects who are less than nineteen (19) years of age.

Inclusion Criteria:

1. Male or Female

2. Children less than nineteen (19) years of age can participate (assuming appropriate consent is obtained).

3. Must currently be exhibiting symptoms characteristic of respiratory syncytial virus (RSV) illness.

4. Subjects must present with one or more of the following to be eligible for enrollment:

   • Fever, ≥ 37.8º C (100º F) at present or within past 24 hours
   • Moderate to severe runny nose*
   • Moderate to severe congestion*
   • Decreased appetite
   • Coughing
   • Sneezing*
   • Wheezing
   • Irritability
   • Decreased activity
   • Labored breathing

Exclusion Criteria:

1. Subjects nineteen years of age or older.
2. The parent or legal guardian is unable to understand and consent to participation.
3. Current or prior treatment during this infection with anti-RSV Synagis®.

Recruitment of RSV symptomatic pediatric subjects who are less than nineteen (19) years of age.