AggeBorn.com

Archive for April, 2010

Vaccines are usually inoculated by injection, but they can be oral (which has virtually eliminated rabies in the EU12 by vaccinating against rabies bait distribution for foxes in the wild) and vaccines nasal spray are being tested (e.g. influenza vaccine NasVax in Israel), or already in use (vaccines against seasonal influenza or against pandemic influenza in the U.S.). The following article will give you the explanation about the vaccines derived from live attenuated agents. Infectious agents are multiplied in the laboratory until they shed naturally or artificially, by changing their pathogenicity. The resulting strains are then unable to fully develop the disease they were talking before, but still retain their antigens and their capacity to induce immune responses. This type of vaccine is generally more effective and more lasting effect than that which is composed of inactivated infectious agents.

Read the rest of this entry »

The primary purpose of vaccines is to induce the production of antibodies by the body, natural biological agents of the body’s defense vis-à-vis the pathogens identified. A vaccine is therefore specific to a disease but not an autre13. This production of antibodies gradually decreases within a more or less long, thus setting the duration of vaccine efficacy. It is measurable and the measure can be used in some cases to whether the subject is effectively vaccinated (vaccine for hepatitis B and anti-tetanus in particular). Antibodies are produced by B cells differentiate into plasma cells. The number of memory B cells, not secreting but that react specifically to the presentation of an antigen appears, it does not vary during the temps14.

Read the rest of this entry »