Respiratory syncytial virus is a common, highly contagious illness that often causes mild upper respiratory symptoms, akin to a cold. In babies, particularly those with tiny airways, RSV can cause the ...

Pope Francis is being treated in hospital for double pneumonia — but what is this condition, and why might the pope be ...

The main signs of COVID-19 are respiratory symptoms, like congestion and a cough. But COVID-19 can also cause skin rashes, ...

Americans are weathering the worst flu season in years, as a number of other respiratory illnesses circulate too, such as COVID-19, RSV and the common cold.