'Aussie Flu' is expected to have a big influence in Ireland this winter.
The HSE is urging people who are in high risk groups to get vaccinate as flu season begins.
People who are risk of the flu include the over 65s, pregnant women and people who have long term health conditions.
It follows report that 'Aussie Flu' is expected to have a big influence in Ireland this winter.
Doctor Ger Meagher from Public Health Department in the Midlands outlines the symptoms: