Are certain vaccines more effective than others?

Data collected during the use of the vaccines during the response supports the high effectiveness rates of all three vaccines in clinical trials. To learn more, visit here. 

To measure how well a vaccine works in a clinical trial, the Food and Drug Administration (FDA) first looks at the number of people who fell ill with the disease. Then the agency compares whether they received the vaccine or the placebo (a harmless, inactive substance that looks identical to the vaccine being tested). If a greater share of those who are sick received the placebo instead of the vaccine, then the vaccine has met an acceptable efficacy standard.

Learn more about this process here.

Covid-19 vaccines currently authorized in the United States demonstrated extremely high efficacy in clinical trials. The Pfizer and Moderna vaccines had efficacy rates of 95 percent and 94.1 percent, respectively. The Johnson & Johnson vaccine, meanwhile,  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.

Bottom Line: People should accept the first vaccine that becomes available to them in their area.

Related Questions
Are children eligible to receive the Covid-19 vaccine?
The FDA and CDC have authorized Pfizer-BioNTech's vaccine for use in children ages 5 through 11 based on strong safety and effectiveness data. The vaccine's safety was studied in roughly 3,100 children who received the vaccine and no serious side effects have been noted. The Pfizer-BioNTech vaccine was also found to be 90.7% effective in preventing Covid-19 infections in this age group. The immune responses were in line with what has been shown in people ages 16 through 25. Vaccinations…
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.
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…
CAPTCHA
This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.