COVID-19 vaccines work CDC

What we do know is how the COVID-19 vaccine works

The COVID-19 vaccine reduces the risk of COVID-19 and its potentially serious complications. All of the COVID-19 vaccines currently available for use in the United States have helped protect people against COVID-19, including critically ill people, in clinical trial settings. So far, Study Looking at how COVID-19 vaccines work in real world conditions (vaccine efficacy study) shows that these vaccines work well.

Most vaccine efficacy data now available are related to the mRNA vaccine (Pfizer-BioNTech and Moderna) as these vaccines have been available for a long time. The CDC and other experts continue to study the efficacy of both mRNA vaccines and Johnson & Johnson’s Johnson (J&J / Johnson) COVID-1 vaccine in real-world situations.

So far, effective research into the real-world situation of the mRNA COVID-19 vaccine is promising.

Vaccine efficacy study There is growing evidence that mRNA COVID-19 vaccines provide the same protection in real-world situations as in their clinical trial settings, reducing the risk of COVID-1, including in critically ill people who have been fully vaccinated. More Most vaccine efficacy data now available relate to the mRNA vaccine. J&J / Janssen vaccine information will be shared when available.

In addition to providing protection against COVID-19, there is growing evidence that COVID-19 vaccines also provide protection against COVID-19 infections without symptoms (asymptomatic infections). The COVID-19 vaccine can reduce the overall spread of the disease, providing protection to the people around you.

Research suggests that two doses are better than one for the mRNA COVID-19 vaccine.

Real-world data Vaccine efficacy studies have shown that receiving only a single dose of these mRNA COVID-19 vaccines provides some protection against COVID-19 in the short term. These studies also show that two doses provide better protection for mRNA vaccines than one dose. To get the most out of the vaccine, people need to get the recommended number of vaccine doses.

The COVID-19 vaccine helps prevent serious disease with the COVID-19 vaccine success cases.

While the COVID-19 vaccines are working well, some people who have been fully vaccinated against COVID-19 will still get sick, as no vaccines are 100% effective. These are called Vaccine success events. Although there is some data that can make vaccinated symptoms less severe than those who have been vaccinated, COVID-19 still occurs. The mRNA COVID-19 vaccines provide protection against serious illness and Eligible for hospitalization of people of all ages. This includes people 65 years of age or older who are at high risk of serious consequences from COVID-19.

It takes about 2 weeks for the body to build protection after this vaccine. You are fully vaccinated two weeks after the second dose of the Pfizer or Moderna vaccine and two weeks after your one dose of the J&J / Janssen vaccine. It is possible that you may still get COVID-19 after the vaccine because your body does not have enough time to build full protection. Take it Caution Until you are fully vaccinated

The CDC recommends

  • Get a COVID-19 vaccine as soon as possible.
  • Take all recommended doses of COVID-19 vaccine for maximum protection.

COVID-19 vaccines and new forms of the virus

What do we know

New Variants The virus that causes COVID-19 is spreading to the United States and other parts of the world. Recent facts suggest that COVID-19 vaccines authorized for use in the United States offer protection against most variants currently spread in the United States. However, some variants can cause illness in some people even after being fully vaccinated.

We don’t know

Evidence influences how new COVID-19 variants make COVID-19 vaccines work in real-world conditions. The CDC will continue to look at how the vaccines are working to see if the variants will have any effect on how the COVID1 vaccines work in real-world conditions.

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