Vaccines are classified in two categories. They're either prophylactic (offset or prevent a future infection), or therapeutic (a treatment or remedy after a problem has occurred).
Prophylactic vaccines are for prevention of childhood or adult dis-eases, like measles, mumps, chicken pox, the flu, or hepatitis.
Therapeutic vaccines are like those used to help treat cocaine addiction. Research is currently being conducted for cancer vaccines, as well. The intent is to be able to give the vaccine to a cancer patient while they already have cancer, to prevent it from growing and/or metastasizing.
Both types of vaccines have known risks and side effects, which each person needs to fully evaluate before being vaccinated.
Stay tuned for: Vaccines - Part 3 - Ingredients, Part 4 - Side Effects, and Part 5 - What You Can Do.
Sources: www.wikipedia.org, www.webmd.com, and www.cdc.gov.
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