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COVID-19 Vaccine Effectiveness Research.

Monitoring COVID-19 Vaccine Effectiveness.

Monitoring COVID-19 Cases, Hospitalizations, and Deaths by Vaccination Status.How and Why CDC Measures Vaccine Effectiveness.

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COVID-19 Vaccines are Effective plus icon.Investigating Long-Term Effects of Myocarditis.Possibility of COVID-19 Illness after Vaccination.Stay Up to Date with Vaccines plus icon.Why Children & Teens Should Get Vaccinated.Learn about why you should get vaccinated even if you already had COVID-19. You can also continue to have long-term health issues after COVID-19 infection. If you get sick, you can spread COVID-19 to others. Getting sick with COVID-19 can cause severe illness or death, and we can’t reliably predict who will have mild or severe illness. Getting vaccinated yourself may also protect people around you, particularly people at increased risk for severe illness from COVID-19. COVID-19 vaccination helps protect you by creating an antibody response without you having to experience sickness.

Getting a COVID-19 vaccination is also a safer way to build protection than getting sick with COVID-19. Getting sick with COVID-19 can offer some protection from future illness, sometimes called “natural immunity,” but the level of protection people get from having COVID-19 may vary depending on how mild or severe their illness was, the time since their infection, and their age. One study showed that, for people who already had COVID-19, those who do not get vaccinated after their recovery are more than 2 times as likely to get COVID-19 again than those who get fully vaccinated after their recovery.Īll COVID-19 vaccines currently available in the United States are effective at preventing COVID-19. Getting a COVID-19 vaccine gives most people a high level of protection against COVID-19 and can provide added protection for people who already had COVID-19. Learn more about what ingredients are and are not in Pfizer-BioNTech, Moderna, Novavax, or Johnson & Johnson/Janssen COVID-19 vaccines.ĬOVID-19 vaccination causes a more predictable immune response than infection with the virus that causes COVID-19. This process is a part of normal body functioning.ĬOVID-19 vaccines do NOT contain ingredients like preservatives, tissues (like aborted fetal cells), antibiotics, food proteins, medicines, latex, or metals. After the body produces an immune response, it discards all the vaccine ingredients just as it would discard any information that cells no longer need. This response helps protect you from getting sick with COVID-19 in the future. The Novavax COVID-19 vaccine includes harmless pieces (proteins) of the virus that causes COVID-19 they are pieces of what is often called the “spike protein.” These give instructions to cells in your body to create an immune response. Pfizer-BioNTech and Moderna COVID-19 vaccines also contain messenger RNA (mRNA) and the Johnson & Johnson/Janssen COVID-19 vaccine contains a harmless version of a virus unrelated to the virus that causes COVID-19.

Exact vaccine ingredients vary by manufacturer.

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