Viruses are not the cause of disease. Perhaps they are a result of it as they are tiny pieces of genetic debris. They come from our own cells and they are not alive. They don't attack or kill anything.
Colds and flus are one way the body gets rid of toxins. I used to get them every year -- usually twice a year -- and suffer miserably for a week. It would be fully ten days before I'd be back to "normal." I used to dread them. Got over my last one in 20 minutes and that was more than 23 years ago, but I still haven't forgotten the misery. I no longer fear them, nor any SARS virus. The virus is just a high tech form of voodoo. I fear the people who are promoting this scare, who are making laws that will restrict freedom and force invasive and dangerous procedures on the public.