Here the name of deadly virus in human

Virus which can take our life. 

Introduction. 

Today we tell you about the virus. Everyone know  A virus is a small infectious agent that replicates only inside the living cells of an organism. A virus is effect all types of organism(human being, insects, plants, and animal).

The origins of viruses in the evolutionary history of life are unclear. some may have evolved from plasmids - pieces of DNA that can move between cells - while others may have evolved from bacteria. In evolution, viruses are an important means of horizontal gene transfer, which increases genetic diversity in a way analogous to sexual reproduction. Viruses are considered by some to be a life form, because they carry genetic material, reproduce, and evolve through natural selection, but lack key characteristics (such as cell structure) that are generally considered necessary to count as life. Because they possess some but not all such qualities, viruses have been described as "organisms at the edge of life", and as replicators.

How virus spread in one place to another place:

a virus is spread only when  a thing near them in which they can live. Like a living being. For example. A baby's bird only live in nest. When he became full adult then they was gone in another place and live their. Like that a virus is gone another place. Viruses spread from person to person mainly in droplets that fly out when you cough or sneeze. These tiny drops from a sick person move through the air and land on the mouths or noses of others nearby. 

Viruses can be transmitted in a variety of ways. Some viruses can spread through touch, saliva, or even the air. Other viruses can be transmitted through sexual contact or by sharing contaminated needles. Insects including ticks and mosquitoes can act as "vectors," transmitting a virus from one host to another. 

In human being a virus is not a common thing. A virus can take life of human. Here we tell some name of virus. if this virus is near you then it makes your life deadly. These virus is also called deadly virus. 

1. Ebola - ebola hemarhhagic fever

2. Marburg virus

3. Hanta virus

4. Lassa 

5. Rabies

6. Small pox

7. Dengue

8. Influenza

These virus are called deadly virus.....