A vaccine is a substance that helps in providing immunity against a disease. An mRNA (messenger mRNA ) vaccine is a type of vaccines that uses a copy of natural chemicals called mRNA of a specific pathogen to produce an immune response.
The use of mRNA vaccines goes back to the early 1990s. since that time, mRNA vaccines for human use have been developed and tested for diseases like Rabies, Zika, and influenza, although non of these mRNA vaccines have been licensed.
Before the COVID-19 pandemic, no mRNA vaccines are licensed for use in humans. In December 2020, both Moderna and Pfizer/BioNTech obtained emergency use authorization for their mRNA-based COVID-19 vaccines, to be the first mRNA vaccines in history to be licensed.
mRNA vaccines represent a promising alternative to conventional vaccines. but their still some challenges in advancing these vaccines for widespread therapeutic use.
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0:15 definition of a vaccine
0:16 Types of vaccines
0:23 definition of conventional vaccines
0:53 mRNA vaccines
1:26 mechanism of mRNA vaccines
2:16 advantages of mRNA vaccines
3:06 drawbacks of mRNA vaccines