Technology

The vaccine breakthrough

How do these vaccines work?
Up to now, vaccines have introduced the immune system to a benign version of a virus or bacteria, priming it to recognize and fight the real pathogen if and when it strikes. Vaccines for measles, polio, the flu, and other infectious diseases use parts of or entire viruses that have been weakened or inactivated. The Pfizer and Moderna vaccines are based on a novel approach. They rely on a snippet of genetic material called messenger RNA, or mRNA, that is encased in a tiny, protective bubble of fat.

Source:

theweek.com

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