My understanding is they are vaccines with more of a history of production and therefore cheaper and a bit easier to store and therefore make it easier to vaccinate the world.
I am going to tag in
@RAFUH for a proper explanation on how they work compared to the other vaccines!
Yes. They can be stored at normal refrigeration levels and last longer once open. They also have fewer side effects than the mRNA and vector vaccines.
There are several other vaccines that have been made with similar technology
Vaccine Technologies
Vaccine Types
Based on a number of these factors, scientists decide which type of vaccine they will make. There are several types of vaccines, including:
- Inactivated vaccines
- Live-attenuated vaccines
- Messenger RNA (mRNA) vaccines
- Subunit, recombinant, polysaccharide, and conjugate vaccines
- Toxoid vaccines
- Viral vector vaccines
Subunit, recombinant, polysaccharide, and conjugate vaccines
Subunit, recombinant, polysaccharide, and conjugate vaccines use specific pieces of the germ—like its protein, sugar, or capsid (a casing around the germ).
Because these vaccines use only specific pieces of the germ, they give a very strong immune response that’s targeted to key parts of the germ. They can also be used on almost everyone who needs them, including people with weakened immune systems and long-term health problems.
One limitation of these vaccines is that you may need booster shots to get ongoing protection against diseases.
These vaccines are used to protect against: