Answers

How much protection does the first vaccine dose give?

Consider a recent study carried out by the Centers for Disease Control and Prevention (CDC) of the authorized vaccines. Pfizer-BioNTech and Moderna's vaccines were found to be 82 percent effective after one dose in preventing people from getting Covid-19 cases with symptoms.

The Pfizer-BioNTech Covid-19 vaccine demonstrated 52 percent efficacy in protecting against disease after the first dose, according to the clinical trial data. The Moderna vaccine demonstrated 80.2 percent efficacy after the first dose. To maximize the protection from these vaccines, it is important to get both doses.

 The Johnson & Johnson vaccine was 85 percent effective in preventing severe disease across all regions studied, and showed protection against COVID-19 related hospitalization and death, beginning 28 days after vaccination, according to existing data.

Learn more about vaccine efficacy here.

Read more about the clinical trials for the FDA-authorizedPfizer-BioNTech, Johnson & Johnson, and Moderna vaccines.  

What are the side effects of Covid-19 vaccines?
Get the Second Shot
CVF State Map
When can I get my Covid vaccine?

Each state has its own plan for deciding who gets the covid vaccine first. Visit our interactive state map to visit your state public health department website for more information on vaccine availability and distribution.

find covid vaccine location >

 

Related Questions
View All Answers
Are children eligible to receive the Covid-19 vaccine?
The FDA has authorized the Pfizer-BioNTech and Moderna vaccines for use in children older than 6 months based on strong safety and effectiveness data. Learn more.To find a vaccine near you, you can search vaccines.gov, text your ZIP code to 438829, or call 1-800-232-0233. You can also schedule an appointment with your child’s physician or healthcare provider.Alternatively, you can visit your local pharmacy's website to see if vaccination walk-ins or appointments are available.For…
Learn more
Can I mix Covid vaccines and/or booster shots?
The FDA has authorized mixing booster doses of the Pfizer-BioNTech, Moderna, and Johnson & Johnson vaccines. Following the completion of primary (two shots for Pfizer and Moderna and one shot for J&J) vaccination, eligible individuals may choose to use the same or a different available Covid-19 vaccine as their booster dose.
Learn more
Who is eligible for a booster shot?
The FDA has authorized booster shots for tens of millions of people who previously received two Pfizer-BioNTech or Moderna doses, including: Seniors ages 65 and older Adults ages 18+ who have underlying medical conditions that put them at increased risk of the virus Adults ages 18+ in long-term care facilities, such as nursing homes or assisted living People at increased risk of the virus due to their working or living situations -- including first responders, teachers and school…
Learn more
CAPTCHA
This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.