The viral genetic information is subject to permanent genetic changes. Constant adjustments to the defense reactions of the infected organism are possible.
infection forms
infest a body cell by viruses is from "non-injury" to the "total destruction".
-
cytolytic infection -
Efficient replication of the virus in the host cell -
massive changes in cell metabolism -> necrosis! -
non-lytic infection -
be virus replication without destroying the host cell -
host cells are often destroyed by the body's own defense -
latent infection -
infection of the Will cell -
virus enters Latenszustand on -
viruses to escape the clutches of the immune system and remain for life in the body -
possible activation of the virus by stress, hormonal influences , psychological stress, ... -
transforming infection / tumor formation -
a deregulation of the generation cycle of the cell -
there is an excessive growth and reproduction
virus infections are treated symptomatically in particular. Viruses are ressistent antibiotics. Vaccinations work well. The go through a viral infection has also immunogenic. Special form of immunization: Feiung silent, ie one has the virus without falling ill and is taken become immune.
reproduction cycle of viruses
| Einzellschritte | Description | Figure |
| adsorption |
|  |
| penetration |
|  |
| uncoating | release of the nucleic acid of the capsid and penetration of nucleic acid through the pores of the nuclear membrane into the nucleus, empty protein shell disintegrates |  |
| replication | synthesis of viral envelope protein, often replicating the virus nucleic acid -> Composition of a new generation of infectious virus particles |  |
| composition "self assembly" | spontaneous joint storage matching Parts, composed of protein folding | |
| release "Release" |
|  |
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