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Chapter 2 - Viral Hepatitis

from Section 2 - Infections in Pregnancy

Published online by Cambridge University Press:  11 October 2019

By
Rashda Imran
Edited by
Adel Elkady ,
Prabha Sinha  and
Soad Ali Zaki Hassan
Adel Elkady
Affiliation:
Police Force Hospital, Cairo
Prabha Sinha
Affiliation:
Oman Medical College, Oman
Soad Ali Zaki Hassan
Affiliation:
Alexandria University
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Summary

Viruses are small, non-living parasites, which cannot replicate outside a host cell.

Viruses are grouped according to their genetic material: DNA or RNA.

DNA viruses are mostly double-stranded while RNA viruses are single-stranded.

A virus injects its genetic information into a host cell and then takes control of the cell’s machinery. This process enables the virus to make copies of its DNA or RNA and make the viral proteins inside the host cell. A virus can quickly make multiple copies of itself in one cell, release these copies to infect new host cells and make even more copies. In this way, a virus can replicate very quickly inside a host.

Type
Chapter
Information
Infections in Pregnancy
An Evidence-Based Approach
 , pp. 9 - 17
Publisher: Cambridge University Press
Print publication year: 2019

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