COVID-19 Vaccine Effectiveness
According to the Center for Disease Control and Prevention, "In the United States, most available vaccine effectiveness data are related to mRNA vaccines (Pfizer-BioNTech and Moderna) because these vaccines have been available longer and are used more widely."
You can visit the Morbidity and Mortality Weekly Report (MMR) on the Center for Disease Control and Prevention website every week. A report released on August 13, 2021 included the data table below. It shows the number of cases by age group under the age of 65 years old.
Reports Released by the Center for Disease Control and Prevention (CDC)
August 18, 2021
- Sustained Effectiveness of Pfizer-BioNTech and Moderna Vaccines Against COVID-19 Associated Hospitalizations Among Adults - United States, March - July 2021
- Effectiveness of Pfizer-BioNTech and Moderna Vaccines in Preventing SARS-CoV-2 Infection Among Nursing Home Residents Before and During Widespread Circulation of the SARS-CoV-2 B.1.617.2 (Delta) Variant- National Healthcare Safety Network, March 1- August 1, 2021
- Use of COVID-19 Vaccines After Reports of Adverse Events Among Recipients of Janssen (Johnson & Johnson) and mRNA COVID-19 Vaccines (Pfizer-BioNTech and Moderna): Update from the Advisory Committee on Immunization Practices - United State, July 2021
August 13, 2021
- Alternative Methods for Grouping Race and Ethnicity to Monitor COVID-19 Outcomes and Vaccination Coverage
- Reduced Risk of Reinfection with SARS-CoV-2 After COVID-19 Vaccination — Kentucky, May–June 2021
- Rapid Increase in Circulation of the SARS-CoV-2 B.1.617.2 (Delta) Variant — Mesa County, Colorado, April–June 2021
- Effectiveness of COVID-19 Vaccines in Preventing Hospitalization Among Adults Aged ≥65 Years — COVID-NET, 13 States, February–April 2021
- Use of COVID-19 Vaccines After Reports of Adverse Events Among Adult Recipients of Janssen (Johnson & Johnson) and mRNA COVID-19 Vaccines (Pfizer-BioNTech and Moderna): Update from the Advisory Committee on Immunization Practices — United States, July 2021
August 6, 2021
- COVID-19 Vaccine Safety in Adolescents Aged 12–17 Years — United States, December 14, 2020–July 16, 2021
- Outbreak of SARS-CoV-2 Infections, Including COVID-19 Vaccine Breakthrough Infections, Associated with Large Public Gatherings — Barnstable County, Massachusetts, July 2021
From the COVID-19 Vaccine Effectiveness, Center for Disease Control and Prevention, https://www.cdc.gov/coronavirus/2019-ncov/vaccines/effectiveness/how-they-work.html