Random Image for vaccines
Image originally shown at http://www.uclahealth.org/ae_images/adam04/graphics/images/en/9469.jpg
Image for vaccines
Possible definitions for vaccines
vaccine
Preparation containing either killed or weakened live microorganisms, or a toxoid, introduced by mouth, by injection, or by nasal spray to stimulate production of antibodies against an infectious agent. This confers immunity to that agent, since the B lymphocytes remain sensitized to it and respond to later infection by producing more antibodies. The first vaccine, against smallpox, was introduced by E. Jenner in 1798. Vaccines have been developed against diseases caused by bacteria (e.g., typhoid, whooping cough, tuberculosis) and by viruses (e.g., measles, influenza, rabies, poliomyelitis). Effectiveness varies, and a small percentage of people have adverse reactions. Those with immunodeficiency should not receive live vaccines.
Canada custom B2B mailing lists
Top words beginning with V: vesbium, vomiters, vervelle, veronalism, veinule, voluntarist, violative, verte, vaporose, vertigos, verslibre, varnisher, vannet, viver, valsalvan, vespertinal, verona, violence, varioliform, voto
Browse the alphabet: A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z