It was not until February 17, 2020, that a Wikipedia page on mRNA vaccines was created.
An RNA vaccine is a type of vaccine which is composed of nucleic acid RNA. Just like normal vaccines, RNA vaccines train antibodies which will fight potential pathogens. RNA vaccines resemble DNA ones, they both allow for a vaccination without introducing real pathogens.
On February 18, the page Rna vaccine was changed to RNA vaccine (capitalization).
On September 26, 2021. the page RNA vaccine was redirected to MRNA vaccine.