Key facts Pertussis, also known as whooping cough, is a highly contagious respiratory illness caused by the bacteria Bordetella pertussis The illness begins with cold-like symptoms and a cough that worsens, sometimes resulting in violent coughing fits, and can last for weeks or months. A characteristic “whoop” sound may occur when the affected person gasps for air between coughs Whooping cough is most dangerous for babies Vaccination is the best way to prevent whooping cough. Overview Whooping cough, or pertussis, is a respiratory infection that is highly contagious. It is caused by the bacterium Bordetella pertussis , and it is spread from person to person by coughing and sneezing. The disease can affect anyone but it is most dangerous for babies. Vaccination against pertussis is included in the UK’s routine immunisation schedule for babies. Signs and symptoms The first signs of whooping cough are similar to a cold, such as a runny nose and sore throat; a high temperature is uncommon.…