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An attenuated vaccine (or a live attenuated vaccine, LAV) is a vaccine created by reducing the virulence of a pathogen, but still keeping it viable (or "live"). [1] Attenuation takes an infectious agent and alters it so that it becomes harmless or less virulent. [2] These vaccines contrast to those produced by "killing" the pathogen ...
Live attenuated influenza vaccine (LAIV) is a type of influenza vaccine in the form of a nasal spray that is recommended for the prevention of influenza. [ 2 ] [ 7 ] It is an attenuated live vaccine, unlike other influenza vaccines, which are inactivated vaccines .
A live vaccine is a vaccine with active microbe (virus or bacteria), meant to proliferate in the person to vaccine. Pages in category "Live vaccines" The following 24 pages are in this category, out of 24 total.
How does the new home flu vaccine work? FluMist is a live attenuated flu vaccine, which means it uses a weakened version of the flu. (The flu shot, on the other hand, does not use a live version ...
For example, people between ages 2 and 17 who are taking aspirin shouldn’t take FluMist or other live-attenuated vaccines because the combination has been linked to greater risks of a rare but ...
This form of vaccine combines the beneficial features of attenuated and recombinant vaccines, providing the long-lasting immunity of attenuated vaccines’ with recombinant vaccines’ genetically engineered precision and safety. [2] Live recombinant vaccines can be administered via orally or nasally, instead of injection.
The process of serial passage yields a live vaccine. There are both advantages and disadvantages to this. Most notably, live vaccines are sometimes more effective and more long-lasting than inactivated or other types of vaccines. [10] [11] However, just as the virus evolved to become attenuated, it may reverse-evolve in the host, leading to ...
a nasal spray of live attenuated influenza vaccine, which contains the live but attenuated (weakened) form of the virus. Injected vaccines induce protection based on an immune response to the antigens present on the inactivated virus, while the nasal spray works by establishing short-term infection in the nasal passages. [173]