Influenza, more commonly referred to as the “flu”, is not the same as having a bad cold. Influenza is a respiratory disease with symptoms common to a cold – runny or stuffy nose, sore throat, sneezing and coughing. However, influenza can be more severe than a cold and often associated with high fever and chills. Other symptoms also include headache, fatigue and muscle aches. Children with the flu may also experience vomiting and diarrhoea. However, it is difficult to distinguish influenza from other acute viral respiratory illnesses without the aid of a laboratory test to detect the virus.