COVID-19: People told to open windows this winter to decrease coronavirus risk

People are being encouraged to open their windows this winter to decrease the risk of catching coronavirus. The Department for Health has released a video showing how virus particles linger in enclosed spaces. It also shows how letting fresh air in can reduce the risk of infection by more than 70%. Coronavirus is spread through the air by droplets and smaller particles known as aerosols when they are exhaled from the nose and mouth of an infected person as they breathe, speak or cough.