MRNA vaccines are used to protect against: mRNA vaccines have several benefits compared to other types of vaccines, including shorter manufacturing times and, because they do not contain a live virus, no risk of causing disease in the person getting vaccinated. mRNA vaccines make proteins in order to trigger an immune response. Researchers have been studying and working with mRNA vaccines for decades and this technology was used to make some of the COVID-19 vaccines. Messenger RNA vaccines-also called mRNA vaccines Measles, mumps, rubella (MMR combined vaccine).Live vaccines are used to protect against: That means they can’t be used in countries with limited access to refrigerators.
They need to be kept cool, so they don’t travel well.Because they contain a small amount of the weakened live virus, some people should talk to their health care provider before receiving them, such as people with weakened immune systems, long-term health problems, or people who’ve had an organ transplant.Just 1 or 2 doses of most live vaccines can give you a lifetime of protection against a germ and the disease it causes.īut live vaccines also have some limitations. Live vaccines use a weakened (or attenuated) form of the germ that causes a disease.īecause these vaccines are so similar to the natural infection that they help prevent, they create a strong and long-lasting immune response. Inactivated vaccines are used to protect against: So you may need several doses over time (booster shots) in order to get ongoing immunity against diseases. Inactivated vaccines usually don’t provide immunity (protection) that’s as strong as live vaccines. Inactivated vaccines use the killed version of the germ that causes a disease. Subunit, recombinant, polysaccharide, and conjugate vaccines.There are several types of vaccines, including: The best technology or approach to create the vaccineīased on a number of these factors, scientists decide which type of vaccine they will make.Who needs to be vaccinated against the germ.How your immune system responds to the germ.When scientists create vaccines, they consider: Each type is designed to teach your immune system how to fight off certain kinds of germs-and the serious diseases they cause. There are several different types of vaccines.
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