Influenza, or the flu, is a virus transmitted by respiratory droplets from coughing and sneezing. It can cause the sudden onset of a fever, cough, runny nose, sore throat, headache, muscle and joint pain.
In Australia, the flu is responsible for more than 5,000 hospitalisation and 100 deaths a year. The highest rates are among those over 65, whose immune systems aren’t as effective as they used to be, and children under five, whose immune systems are yet to mature.
