RSV is an important cause of pneumonia in older adults. The incidence and severity are almost as important as influenza. Similar to children, RSV peaks in the winter season. There is increased risk of RSV infection in older adults who are in regular contact with small children. Awareness of RSV in older adults is almost absent, which also includes adult physicians who rarely attempt to diagnose the disease. Every year about 3-6% of all older adults are infected with RSV. Course of disease is most severe on older adults with severe underlying disease such as heart failure or COPD. If these patients with severe underlying disease are hospitalized about 8% may even die. RSV infection can be diagnosed by PCR on respiratory swabs. There is no treatment or vaccination for RSV infection in older adults. Currently, there are several vaccines in clinical development with the purpose to prevent severe RSV infection in older adults.