Key points from article :
Even in advanced nations, flu is responsible for thousands of deaths every year.
Flu can cause serious conditions such as pneumonia and encephalitis.
People with weakened immune systems most at risk.
This includes over 65s, children and pregnant women.
2017/18 flu season was the worst for seven years, with 15,000 deaths.
Antivirals may be prescribed to at-risk groups who present with a flu-like illness.
Simple hygiene can help you avoid catching flu and prevent its spread.
The vaccine is the best defence we have against the spread of flu.
