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Tracking the next pandemic: Avian Flu Talk

H1N1 vaccination to be required for US military

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Elver View Drop Down
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    Posted: September 03 2009 at 9:24pm
H1N1 vaccination to be required for US military
 
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" the vaccines will be mandatory for every active-duty soldier, sailor, airman and Marine. "
 
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Mary008 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mary008 Quote  Post ReplyReply Direct Link To This Post Posted: September 03 2009 at 10:41pm
 
 
Herd immunity (or community immunity) describes a type of immunity that occurs when the vaccination of a portion of the population (or herd) provides protection to unprotected individuals.[1]
 
 
Herd immunity theory proposes that, in diseases passed from person-to-person, it is more
 
difficult to maintain a chain of infection when large numbers of a population are immune.


The higher the proportion of individuals who are immune, the lower the likelihood that a

susceptible person will come into contact with an infected individual.[2]

Vaccination acts as a sort of "firebreak" in the spread of the disease, slowing or preventing

further transmission of the disease to others.[3]


Unvaccinated individuals are indirectly protected by vaccinated individuals, as the latter will not contract and transmit the disease between infected and susceptible individuals.[2]


Hence, a public health policy of herd immunity may be used to reduce spread of an illness and provide a level of protection to a vulnerable, un-vaccinated subgroup.

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