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[[Polio]], for example, killed over 3,000 people in the United States in 1952 [http://www.cdc.gov/nchs/data/vsus/VSUS_1952_2.pdf], and afflicted such noted persons as President [[Franklin Delano Roosevelt]], actor Alan Alda, and musician Itzak Perlman. When doctors began using a vaccine to fight polio, it practically eradicated the disease in the developed world.  
 
[[Polio]], for example, killed over 3,000 people in the United States in 1952 [http://www.cdc.gov/nchs/data/vsus/VSUS_1952_2.pdf], and afflicted such noted persons as President [[Franklin Delano Roosevelt]], actor Alan Alda, and musician Itzak Perlman. When doctors began using a vaccine to fight polio, it practically eradicated the disease in the developed world.  
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==Adverse Events==
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Only live attenuated vaccines can still cause infection. All vaccines can cause illness, but this is commonly a hypersensitivity reaction (similar to an allergic response), not due to the disease itself. Very rarely a serious disease known as eczema vaccinatum]can emerge. Vaccines that use pieces of pathogens often use a carrier virus in the injection. Those with very weak immune systems that are exposed to such a vaccine can become infected with the carrier virus and develop [[eczema]]. A recent case of this was reported in the United States after a military man was vaccinated with smallpox and his two-year-old son became ill.<ref>http://www.associatedcontent.com/article/183349/soldier_infects_toddler_son_with_lifethreatening.html AP article on eczema vaccinatum</ref>
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A number of vaccination reactions are deemed serious enough to contraindicate further vaccinations of the same type. These include extensive swelling and redness at the injection site, prolonged fever, bronchospasm and laryngeal [[edema]] (narrowing of the airways causing difficulty in breathing), and collapse/seizures with or without unconsciousness and/or encephalitis.<ref>[http://www.gpnotebook.co.uk/simplepage.cfm?ID=2067071044 General Practice Notebook - vaccine reactions]</ref>
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===Published Adverse Reaction Rates===
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*The Hepatitis B Vaccine (HBV) has a .000167% chance of causing [[anaphylaxis]] upon vaccination.<ref>[http://www.cdc.gov/mmwr/preview/mmwrhtml/00046738.htm]</ref>
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*There is no correlation between the HBV and multiple sclerosis.<ref>[http://www.medsafe.govt.nz/Profs/PUarticles/vaccinenews.htm]</ref>
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*The Measles, Mumps, Rubbela (MMR) vaccine has a 25% chance of causing [[arthralgia]] (joint pain) and 10% chance of causing [[arthritis]]-like symptoms in women who are past puberty. This pain and stiffness begins 1–3 weeks after vaccination, persisting for 1 day to 3 weeks.<ref>[http://www.cdc.gov/vaccines/vpd-vac/combo-vaccines/mmr/faqs-mmr-hcp.htm]</ref>
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*The MMR vaccine has a .00484% chance of causing [[thrombocytopenia]]. However, the measles and rubella both have much higher chances of causing thrombocytopenia.<ref>[http://adc.bmj.com/cgi/content/full/84/3/227 E Miller et al., Idiopathic thrombocytopenic purpura and MMR vaccine in ''Archives of Disease In Childhood'', 84:227-229]</ref>
      
==Influenza Vaccine==
 
==Influenza Vaccine==
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Bulging or swollen [[fontanelle]]s have been linked with many vaccines commonly given to infants, such as the [[diptheria]]-[[tetanus]] (DPT) vaccine. Many families, out of concern for their child's health, have sought legal justice for the potential health damage.<ref>http://legaljustice4john.com/fontanellebulging.htm</ref>
 
Bulging or swollen [[fontanelle]]s have been linked with many vaccines commonly given to infants, such as the [[diptheria]]-[[tetanus]] (DPT) vaccine. Many families, out of concern for their child's health, have sought legal justice for the potential health damage.<ref>http://legaljustice4john.com/fontanellebulging.htm</ref>
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Only live attenuated vaccines can still cause infection. All vaccines can cause illness, but this is commonly a hypersensitivity reaction (similar to an allergic response), not due to the disease itself. Very rarely a serious disease known as eczema vaccinatum]can be causes by the smallpox vaccine. Vaccines that use pieces of pathogens often use a carrier virus in the injection. Those with very weak immune systems that are exposed to such a vaccine can become infected with the carrier virus and develop [[eczema]]. A recent case of this was reported in the United States after a military man was vaccinated with smallpox and his two-year-old son became ill.<ref>http://www.associatedcontent.com/article/183349/soldier_infects_toddler_son_with_lifethreatening.html AP article on eczema vaccinatum</ref>
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A number of vaccination reactions are deemed serious enough to contraindicate further vaccinations of the same type. These include extensive swelling and redness at the injection site, prolonged fever, bronchospasm and laryngeal [[edema]] (narrowing of the airways causing difficulty in breathing), and collapse/seizures with or without unconsciousness and/or encephalitis.<ref>[http://www.gpnotebook.co.uk/simplepage.cfm?ID=2067071044 General Practice Notebook - vaccine reactions]</ref>
 +
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===Published Adverse Reaction Rates===
 +
*The Hepatitis B Vaccine (HBV) has a .000167% chance of causing [[anaphylaxis]] upon vaccination.<ref>[http://www.cdc.gov/mmwr/preview/mmwrhtml/00046738.htm]</ref>
 +
*There is no correlation between the HBV and multiple sclerosis.<ref>[http://www.medsafe.govt.nz/Profs/PUarticles/vaccinenews.htm]</ref>
 +
*The Measles, Mumps, Rubbela (MMR) vaccine has a 25% chance of causing [[arthralgia]] (joint pain) and 10% chance of causing [[arthritis]]-like symptoms in women who are past puberty. This pain and stiffness begins 1–3 weeks after vaccination, persisting for 1 day to 3 weeks.<ref>[http://www.cdc.gov/vaccines/vpd-vac/combo-vaccines/mmr/faqs-mmr-hcp.htm]</ref>
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*The MMR vaccine has a .00484% chance of causing [[thrombocytopenia]]. However, the measles and rubella both have much higher chances of causing thrombocytopenia.<ref>[http://adc.bmj.com/cgi/content/full/84/3/227 E Miller et al., Idiopathic thrombocytopenic purpura and MMR vaccine in ''Archives of Disease In Childhood'', 84:227-229]</ref>
    
== Common Misconceptions Surrounding Vaccines ==
 
== Common Misconceptions Surrounding Vaccines ==
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