Immunization (vaccination) is a way to create immunity to (protection from) some diseases. Sometimes this is done by using small amounts of a killed or weakened germ that causes the disease. Other times the vaccine is simply a small piece of the germ, such as a protein or a piece of its genetic material.Inactivated vaccines. Live-attenuated vaccines. Messenger RNA (mRNA) vaccines. Subunit, recombinant, polysaccharide, and conjugate vaccines. Toxoid vaccines. Viral vector vaccines.
ThriftBooks sells millions of used books at the lowest
everyday prices. We personally assess every book's quality and offer rare, out-of-print treasures. We
deliver the joy of reading in recyclable packaging with free standard shipping on US orders over $15.
ThriftBooks.com. Read more. Spend less.