When swine flu was first identitified it sent the world into a panic, then the World Health Organisation declared it a pandemic.<br /><br />The H1N1 virus, as it came to be known, has since spread to 206 countries and overseas territories around the globe.<br /><br />More than 6,700 people have died, and over 70 million vaccines have been distributed.<br /><br />As winter sets in across the northern hemisphere, Dan Nolan looks into whether those vaccines safe or not.
