Lung cells that battle a cold virus identified by scientists

Scientists have identified a type of immune cell in the lungs of humans that may help fight respiratory syncytial virus (RSV). The virus is one of the main causes of childhood hospitalisation, severe lung infection in the elderly, and the common cold. The findings, published in the journal Nature Communications, suggest nose sprays could be the most efficient way of delivering a vaccine against the virus. The researchers found that a type of immune cell, called a resident memory T cell, is particularly active during RSV infection. These immune cells help to identify invaders, raising the alarm to the rest of the body and killing infected cells. Although scientists already knew these cells help fight influenza infections in mice, this is the first time they have been shown to help protect against RSV in humans. The team also found that individuals with naturally higher numbers of these cells were less likely to suffer symptoms. Dr...