Viruses - In General

The course of the viral infection 1) Absorption – The virus can only get attached to the cell by receptors 1) Penetration of the Host cell / DNA injection – The whole particle goes inside the cell – the virus injects its viral genome 1) Replication of the viral genetic information – Replication and maturing ○ The whole host cell works for the virus ○ It replicates the viral genome 1) Lysis of the cell / new virions are released – Destruction of the cell – The viruses are incapable of carrying so many viruses

The list of viral groups 1) According to the Nucleic acid they carry

a. RNA viruses b. DNA viruses 2) According to their Host 3) According to their Structure a.

Polio virus is the pathogen for Polio disease