48- Vaccines can be used to prevent viral infection by: (1creating an immune response in the host 2-destroying any viruses that enter the host 3-creating a blocking protein on the cell 4-preventing replication of the virus 49- Antiviral drugs that are used after infection often prevent: 1-cell division 2-immune system degradation 3-reinfection by other viruses (4-uptake of the virus 50- What happens after the virus has been taken up by the cell? 1-it begins making protein 2-it divides 3-jt inserts into the host DNA 4-it switches to infectious mode

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Viral Infections

Viruses are abundantly found, minute entities that have genetic material enclosed within a protein coat. The proteinaceous material enclosing the genetic material of the virus is called a capsid. The genetic material could be either DNA (deoxyribonucleic acid) or RNA (ribonucleic acid). A virus is too minute to be looked at with naked eyes and therefore visualized with the help of a microscope. They are acellular entities that require a host for processes, such as replication, transcription, translation and multiplication. Plants, animals, and bacteria act as host wherein the virus reproduce. Viruses cannot multiply outside the host's body and thus are considered nonliving outside the host body.