Swine flu

Unbelievable things are happend!
When I heard about this kind of disease, I thaught it would happend in story. I major in Microbiology and I took classes about Virus, Immunology and so on. So I know about the risk of Swine flu. In the news paper, someone said this flu will be harmful more than AI;avian influenza bird flu. When AI infected to people in early 20th century, which called Spain flu, twnety five millions to fifty millions people was died in the world. So they guess this Swine flu can be like Spain flu. I'm little bit scared. Every day infected people's numbers are getting rise and countries' number also incresing. I think it'll make a huge problem. People will be thrown into confusion, economics will be not good. Is the Swine flu caused of human? If it is true, humans are paracites in the Earth. I'm worried and shame. :(