Swine flu red flag symptoms and how you can protect yourself from it

dailyrecord.co.uk:

The first flu strain H1N2 – commonly known as swine flu – has been detected in a human based in the UK, the UK Health Security Agency (UKHSA) has announced.

According to the UKHSA, influenza A(H1N2)v is similar to flu viruses currently circulating in pigs in the UK. It is not yet known how transmissible it is.

But since 2005, there have been 50 human cases reported globally. It was through a routine national flu surveillance conducted by the Royal College of General Practitioners and UKHSA, that a person who attended a GP appointment in Yorkshire, due to respiratory symptoms, was identified.

The source of the infection remains unknown and under investigation. But what is swine flu? Should you be worried, and what symptoms should you be looking out for?