1. So let me just run some viruses on my computer. 2. Where we track virus infections worldwide. 3. Biological pollutants include bacteria , viruses , plants and animals . 4. Biological pollutants include bacteria , viruses , plants and animals . 5. Anti-virus software detected a virus. 6. These are the guys who wrote the first PC virus. 7. That we've just blocked viruses in Sweden and Taiwan 8. Here's another one. This is the virus called Crash 9. By completely unrelated other viruses 10. The PC virus problem is 25 years old now.
