COVID Vaccine Facts

 

Over 230 million doses of COVID-19 vaccine were administered in the United States from December 14, 2020, through April 26, 2021.

COVID-19 vaccines are safe and effective. COVID-19 vaccines were evaluated in tens of thousands of participants in clinical trials. The vaccines met FDA’s rigorous scientific standards for safety, effectiveness, and manufacturing quality needed to support emergency use authorization (EUA). Learn more about EUAs in this videoexternal icon.

Millions of people in the United States have received COVID-19 vaccines, and these vaccines will undergo the most intensive safety monitoring in U.S. history. This monitoring includes using both established and new safety monitoring systems to make sure that COVID-19 vaccines are safe.

Long-term side effects are unlikely

Serious side effects that would cause a long-term health problem are extremely unlikely following COVID-19 vaccination. Long-term side effects following any vaccination are extremely rare. Vaccine monitoring has historically shown that if side effects are going to happen, they generally happen within six weeks of receiving a vaccine dose. For this reason, the Food and Drug Administration required each of the authorized COVID-19 vaccines to be studied for at least two months (eight weeks) after the final dose.  Millions of people have received COVID-19 vaccines, and no long-term side effects have been detected. CDC continues to closely monitor COVID-19 vaccines. If scientists find a connection between a safety issue and a vaccine, FDA and the vaccine manufacturer will work toward an appropriate solution to address the specific safety concern (for example, a problem with a specific lot, a manufacturing issue, or the vaccine itself).

Help protect yourself and others by getting vaccinated

COVID-19 vaccination and following CDC recommendations on wearing masks and social distancing are the best ways to protect against COVID-19 illness. CDC recommends you get vaccinated for COVID-19 as soon as you are eligible.

CDC, FDA, and other federal partners will continue to monitor the safety of COVID-19 vaccines as they continue to become more broadly used in the population.



 

Benefits of Getting a COVID-19 Vaccine

COVID-19 vaccination will help keep you from getting COVID-19

COVID-19 vaccination is a safer way to help build protection

COVID-19 can have serious, life-threatening complications, and there is no way to know how COVID-19 will affect you. And if you get sick, you could spread the disease to friends, family, and others around you.
 
Clinical trials for all vaccines must first show they are safe and effective before any vaccine can be authorized or approved for use, including COVID-19 vaccines. The known and potential benefits of a COVID-19 vaccine must outweigh the known and potential risks of the vaccine before it is used under what is known as an Emergency Use Authorization (EUA). Watch a video explaining an EUA.
 
Getting COVID-19 may offer some protection, known as natural immunity. Current evidence suggests that reinfection with the virus that causes COVID-19 is uncommon in the months after initial infection, but may increase with time. The risk of severe illness and death from COVID-19 far outweighs any benefits of natural immunity. COVID-19 vaccination will help protect you by creating an antibody (immune system) response without having to experience sickness.
 
Both natural immunity and immunity produced by a vaccine are important parts of COVID-19 disease that experts are trying to learn more about, and CDC will keep the public informed as new evidence becomes available.

COVID-19 vaccination will be an important tool to help stop the pandemic

Wearing masks and staying 6 feet apart from others help reduce your chance of being exposed to the virus or spreading it to others, but these measures are not enough. Vaccines will work with your immune system so it will be ready to fight the virus if you are infected. 
 
A growing body of evidence suggests that fully vaccinated people are less likely to be infected without showing symptoms (called an asymptomatic infection) and potentially less likely to spread the virus that causes COVID-19 to others. However, further investigation is ongoing.
 
Stopping a pandemic requires using all the tools we have available. As experts learn more about how COVID-19 vaccination may help reduce spread of the virus that causes COVID-19, CDC will continue to update its recommendations to protect communities using the latest science.

COVID-19 vaccines are safe and effective

We understand that some people may be concerned about getting vaccinated now that COVID-19 vaccines are available in the United States. While more COVID-19 vaccines are being developed as quickly as possible, routine processes and procedures remain in place to ensure the safety of any vaccine that is authorized or approved for use. Safety is a top priority, and there are many reasons to get vaccinated.

None of the COVID-19 vaccines can make you sick with COVID-19

None of the COVID-19 vaccines contain the live virus that causes COVID-19 so a COVID-19 vaccine cannot make you sick with COVID-19. Learn more Facts about COVID-19 Vaccines
 


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