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Viruses, Infections and Immunizations

             - Viruses are infectious agents made up of genetic material. (DNA or RNA) that is surrounded by a protein coat (CAPSID) .
             - Viruses incorporate themselves into cells .
             - Viruses are tiny and can only be seen with an election microscope .
             - Viruses can only reproduce and carry our metabolic functions when they are inside a host cell.
             - Viruses can remain dormant for a long time, either outside or inside of the host cell. (eg. chicken pox) .
             - Viruses cause diseases by infecting a host cell. .
             - To produce new copies of a virus, it must use the host cell's reproductive "machinery." Viruses can then leave the.
             host cell, killing it and proceed to infect other cells within the host organism.
             - Viruses can infect plants, animals and bacteria. .
             - Lytic Cycle: process which the virus multiplies and destroys the host cell. .
             - Lysogenic Cycle: process which the virus multiplies with the host cell and gets passed into the daughter cells.
             - Some Examples of Illnesses: AIDS, Chicken Pox, Small Pox, Hepatatis .
             - Protection against and treatment of viral infections .
             - Good health.
             - Vaccination .
             - Antibiotics cannot be used to treat viral infections, but there are anti viral meds that can treat it.
             - Vaccines protect us from serious effects of infectious diseases, by preparing our body to defend itself against the.
             infectious agent, by building immunity. .
             - Importance of vaccination- Immunized children help protect the health of the community, it helps stop the spread.
             of the disease among those who are vulnerable.
             - Types of Immunity: .
             A) Innate/ Natural Immunity: born with it, many viruses that affect other species do not affect them. .
             B) Passive Immunity: receiving antibodies from another source. Lasts for a short period of time because no immune.
             response is generated. eg: maternal antibodies .
             C) Adaptive Immunity: Develops throughout our lives, results to pathogens.

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