How the ‘superflu’ surging can kill you and the 6 easy-to-miss signs it’s turning deadly – and when you need to call 999

FLU is tearing through NHS hospitals ahead of Christmas, and Health Secretary Wes Streeting has sounded the alarm over fatalities. There are thousands of deaths from flu every year in the UK, and experts previously told the Sun they feared “tens of thousands” could die this winter. Some people have up to seven times more at risk…