There are three basic classes of vaccine: live, killed and toxoid..
1.Toxoid vaccines: are made from inactivated toxic compounds that cause illness rather than the micro-organism. Examples of toxoid-based vaccines include tetanus and diphtheria. Toxoid vaccines are known for their efficacy.they are used for long term protection
2.Attenuated, Live Vaccines:Some vaccines contain live, attenuated microorganisms. Many of these are live viruses that have been cultivated under conditions that disable their virulent properties, or which use closely related but less dangerous organisms to produce a broad immune response; however, some are bacterial in nature.
toxoid vaccines are generally safer than attenuated live vaccines, but induce a weaker immune response, so require multiple doses.
Search for questions
Still looking for answers? Try searching for what you seek or ask your own question.
Posted 23 Feb 2010 • 1 answer
Rotavirus Vaccine - my child has been given rotarix vaccine 1st dose. now the vaccine is unavailable
Posted 22 Mar 2010 • 1 answer
Posted 23 Aug 2012 • 1 answer
Posted 9 Nov 2014 • 1 answer
Posted 10 Feb 2015 • 1 answer