Swine flu is essentially a viral (H1N1 virus) infection affecting respiratory tract like any other flu. When it was first detected in 2009, it was called “swine flu” because the virus was similar to those found in pigs. The H1N1 virus is currently a seasonal flu virus found in humans. In 2009, H1N1 was spreading fast around the world, so the World Health Organization called it a pandemic. Since then, people have continued to get sick from swine flu, but not as many.
While swine flu isn’t as scary as it seemed a few years ago, it’s still important to protect yourself from getting it. Like seasonal flu, it can cause more serious health problems for some people. The best protection is to get a flu vaccine, or flu shot, every year.