Vaccination FAQs Index

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Vaccinations increase our ability to fight diseases that may be contagious or even fatal. Immunity occurs by getting the disease or through the use of a vaccine. There are two types of vaccine: inactivated vaccines and vaccines made from live, weakened viruses.


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    • Headache Headaches can be divided into two categories: primary headaches and secondary headaches. Migraine headaches, tension headaches,...learn more »
      In This Article
      Headache Article
      • Headache definition and facts
      • What is a headache?
      • How are headaches classified?
      • What are primary headaches?
      • What are secondary headaches?
      • What are cranial neuralgias, facial pain, and other headaches?
      • 17 types of headaches
      • What causes headaches?
      • What causes tension headaches?
      • What are the signs and symptoms of tension headaches?
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      • How are tension headaches treated?
      • What causes cluster headaches?
      • What are the symptoms of cluster headaches?
      • How are cluster headaches diagnosed?
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      • Can cluster headaches be prevented?
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      • What are the exams and tests for secondary headaches?
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      Cervical Cancer Article
      • Cervical cancer facts
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      • How do women get cervical cancer? What causes cervical cancer?
      • What are the symptoms and signs of cervical cancer?
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      • What tests are used to diagnose cervical cancer?
      • What are the stages of cervical cancer?
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      • What are methods of treatment for cervical cancer?
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      Hepatitis B (HBV, Hep B) Article
      • Hepatitis B facts
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      Mercury Poisoning Article
      • Mercury poisoning definition and facts*
      • What is mercury?
      • What are the forms sources of mercury?
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      • Recycling and Disposal
      • Spills and Cleanup
      • Mercury-Containing Products
      • Where You Live

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