Have a look at https://www.nature.com/articles/d41586-020-01221-y https://www.nature.com/articles/d41586-020-01221-y , it describes in-depth what types of vacci

Have a look at https://www.nature.com/articles/d41586-020-01221-y https://www.nature.com/articles/d41586-020-01221-y , it describes in-depth what types of vaccines they are working on and how they are trying to make the body produce antibodies.