What is Swine Flu?

Although the name 'swine flu' brings up a lot of extra fear and worry, it is important to note that swine flu is just an influenza A H1N1 virus. The big difference is that the current swine influenza A (H1N1) virus has components of pig and bird influenza viruses in it, so that humans don't have any immunity to it. That is what made it more likely that it would become a pandemic virus (have the ability to cause a global outbreak) because it could easily spread from person-to-person.

The Swine flu has been compared to other similar types of influenza virus in terms of mortality: "in the US it appears that for every 1000 people who get infected, about 40 people need admission to hospital and about one person dies".