Why are viruses so hard to kill?

Answer 1

bcoz some viruses are able to survive even in extreme hard conditions like high temperature. For those medicines r used which breaks the bases of their DNA. REMEMBER..... viruses r prokaryotic and they r from the very beginning of life on earth. they infect the hosts and more viruses r created and .......u know what

For more visit.. http://en.wikipedia.org/wiki/Virus#Bibliography. they also have a protein coating which is hard to break in to.

Answer 2

Most viruses that don't have cures for them yet such as Diabetes and Swine Flu are very hard to kill. Viruses are inactive. They are parasites incapable of reproducing on their own. They are only active when they invade a cell. And only at that time they become vulnerable to drugs. But the drugs and any treatments may also damage the cell as well. Despite the fact that our human immune system can develop antibodies that can destroy viruses, it takes time, days, months even years. The most important is that the viruses can mutate and mutate rapidly. Once we finally find a treatment, the viruses may have already mutated to a deadlier and even tougher to eliminate.

Answer 3

The H1N1/09 Pandemic Swine Flu virus (like other influenza viruses) can be destroyed by heat (normal cooking temperatures), alcohol, and other sanitizers for influenza viruses.

Once it has infected you, there are anti-viral medications that can reduce the duration and severity of symptoms, and a healthy immune system knows how to get rid of it eventually, too. Prevention with vaccination is the best approach.

Answer 4

Once the virus enters your white blood cell, which is trying to protect your body, it takes over the cell and makes it duplicate itself so there are more viruses out in your body. Now, you have 1 less white blood cell and a few more virus cells.