RSV Study

Respiratory syncytial virus (RSV) is a common respiratory virus that infects the nose, throat, and lungs. Its symptoms are similar to those of the common cold, flu, or COVID-19, making it difficult to distinguish RSV from other respiratory infections based on symptoms alone.

In Europe, RSV spreads primarily in the autumn and winter, with infection rates peaking in December and January. While most healthy adults and children experience mild illness, RSV can cause severe disease in certain groups, including:

  • Infants younger than six months
  • Older adults
  • People with weakened immune systems or underlying health conditions


Severe RSV infection can lead to bronchiolitis and pneumonia. In fact, RSV is the most common cause of bronchiolitis and pneumonia in children under 12 months.

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PIPELINE-RSV trial

The PIPELINE-RSV trial will investigate two prevention options already licensed and in routine use in many countries. The trial will assess how well they prevent infection from RSV in infants over their first 12 months of life, when used alone or in combination.

Maternal RSV vaccination during pregnancy – A vaccine given to pregnant individuals, which allows protective antibodies to pass to the baby through the placenta, protecting them in their first months of life.

Monoclonal RSV antibody – A single-dose given to newborns that provides immediate protection by delivering antibodies that fight RSV.