Sharks in the Septic Tank Message Board

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Politics : Sharks in the Septic Tank

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To: E who wrote (36612)	11/12/2001 1:20:38 AM
From: Patricia Trinchero	Read Replies (1) of 82486

A virus is what is called an obligate intracellular parasite.It's a strand of RNA or DNA.It must have a living cell to use as it's own personal factory ( so to speak). If everyone has immunity to the virus from immunization then it has no cells to infect and will "die out". If new, non-immune individuals are constantly introduced to the virus then it will propagate. One way to eradicate the virus is to immunize everyone which was done in the past. That creates a situation where there are no susceptible hosts. There are risks involved with the vaccine so it won't be used unless there is an obvious risk from natural infection. The protection one gets from a great number of immunized individuals is because it is harder for the virus to propagate and "find" susceptible hosts. Each non-immunized person is still at serious risk but his or her chances of contacting the virus are reduced.

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