What type of vaccine is the Abrysvo?

Abrysvo is classified as a recombinant vaccine. This means it is created by inserting genetic material from a virus that causes disease into a different virus that doesn't cause disease, effectively using the harmless virus to produce selected viral proteins that trigger an immune response. This method allows the immune system to recognize and prepare to defend against the actual virus without risking the disease itself.

Recombinant vaccines can effectively stimulate a strong immune response and are often used because they can be produced more quickly and safely than traditional methods, which may involve using live or inactivated pathogens. This characteristic of recombinant vaccines makes them particularly valuable in combating viral infections, offering both safety and efficacy.