A vaccine is a biological preparation that provides active acquired immunity to a particular infectious disease. A vaccine typically contains an agent that resembles a disease-causing microorganism and is often made from weakened or killed forms of the microbe, its toxins, or one of its surface proteins. A vaccine is a substance that helps protect against certain diseases.
Vaccines contain a dead or weakened version of a microbe. It helps your
immune system recognize and destroy the living microbe during a future infection. From: Doctor Talk: A Glossary of Flu Terms.
This information can be published in our peer reviewed journal with impact factors and are calculated using citations not only from research
articles but also review
articles (which tend to receive more citations), editorials, letters, meeting abstracts, short communications, and case reports. The inclusion of these publications provides the opportunity for editors and publishers to manipulate the ratio used to calculate the impact
factor and try to increase their number rapidly. Impact
factor plays a major role for the particular journal. Journal with higher impact
factor is considered to be more important than other ones.
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