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In other words, mRNA gives instructions to the cells for how to make the spike protein. Messenger RNA (mRNA) vaccines deliver a genetic template, mRNA, of a harmless piece of the virus, called a spike protein, into the body's cells. There are three types of COVID-19 vaccines, and each works differently: Vaccines allow you to build an immune response to the virus that causes COVID-19 without getting sick. Note that it isn't known yet how long memory cells protect you against the virus that causes COVID-19. In addition, B-lymphocytes produce antibodies to attack the germ. If you get infected with the same germ again, these memory cells can spring into action to protect you. In fact, the body keeps a few memory cells for a set amount of time. After you recover from the infection, your immune system remembers how to guard you against the germ in the future. The first time you're infected with a certain germ, it can take days or weeks for your body to create this immune response. T-lymphocytes, or memory cells, attack cells that are infected with the virus.B-lymphocytes make antibodies that attack the parts of the virus that macrophages left behind.Your body sees antigens as harmful and creates antibodies to attack them.

They leave behind parts of germs, which are called antigens. Macrophages consume germs and dead or dying cells.The body has several types of white blood cells, and each helps to fight off the infection: When SARS-CoV-2, the virus that causes COVID-19, invades your body, you develop an infection. To understand how the COVID-19 vaccines work, it helps to know how your immune system fights illnesses. Kids get better healthcare access thanks to your Red Nose Day donations.AAPI healthcare challenges and solutions.Helping expectant mothers get quality prenatal healthcare.Fighting the invisible epidemic of diabetes.Expanding access to care with the COVID-19 Vaccine Equity Initiative.Helping breast cancer patients get quality healthcare.“The Vaccine Lady” holds a key to health equity.The navigator who guides breast cancer patients.Beating breast cancer through early detection.From patients to advocates How Myeloma Link helps Black communities.Improving access to leukemia & lymphoma care.Improving access to blood cancer care in minority communities.

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