Types of COVID-19 Vaccines Available
There are four approved or authorized vaccines in the United States.
Pfizer-BioNTech and Moderna COVID-19 vaccines are mRNA vaccines.
Novavax COVID-19 vaccine is a protein subunit vaccine.
Johnson & Johnson’s Janssen (J&J/Janssen) COVID-19 vaccine is a viral vector vaccine and can be given in some situations.
That's a sort of disingenuous way of saying "DNA injection". Keep following the links you gave me and you'll eventually find out what's in that "viral vector".