Brief Summary: The purpose of this study is to infect healthy volunteers aged 60-75 years old with Respiratory Syncytial Virus (RSV) to confirm how safe and well tolerated the use of an experimental RSV virus is in a population that has not previously received the virus.

Why did the RSV vaccine fail?

More specifically, in a series of experiments, the research team discovered that the old RSV vaccine failed to trigger a “signaling” mechanism — called toll-like receptor activation — that helps the immune system recognize a virus and mount a defense against it.

What does RSV test for?

Respiratory syncytial virus (RSV) is a very contagious, common viral respiratory infection. RSV testing detects the presence of respiratory syncytial virus in nasal secretions to help diagnose the infection.

So far, the new coronavirus appears to be more dangerous for adults, especially older ones. RSV is riskier for young children, but it can also be serious for older people and those who have other health problems.