RSV (short for respiratory syncytial virus; “syncytial” is pronounced syn·cy·tial  [sin-sish-uhl]) is a common virus that can cause chest infection in babies, children and adults.^1,2 RSV is highly contagious and activity tends to start around April to May, with the peak occurring during the winter months, although the timing may vary depending on where you live in Australia.^2,3 The RSV season is usually a few weeks before the influenza season; however, the timing has been less predictable following the COVID-19 pandemic.³ RSV outbreaks can be serious, causing a range of lung and airway illnesses that can vary from mild to severe, sometimes leading to hospitalisations.² RSV causes thousands of hospitalisations among children each year.²

Almost all children will have been infected with RSV before their second birthday.²
However, there is a higher risk for severe RSV infections in:²

There is no specific treatment for RSV, but supportive care, such as ensuring proper hydration through smaller and more regular feeds, and providing relief for fever and congestion, can help manage the symptoms. In severe cases, hospitalisation may be required to monitor and provide additional medical support.⁷