Monitoring Incidence of COVID-19 Cases, Hospitalizations, and Deaths, by Vaccination Status — 13 U.S. Jurisdictions, April 4–July 17, 2021

@article{Scobie2021MonitoringIO,
  title={Monitoring Incidence of COVID-19 Cases, Hospitalizations, and Deaths, by Vaccination Status — 13 U.S. Jurisdictions, April 4–July 17, 2021},
  author={Heather M. Scobie and Amelia G. Johnson and Amitabh Bipin Suthar and Rachel Severson and Nisha B. Alden and Sharon Balter and Daniel Bertolino and David Blythe and Shane Brady and Betsy Cadwell and Iris Cheng and Sherri L. Davidson and Janelle Delgadillo and Katelynn Devinney and Jeffrey S. Duchin and Monique M Duwell and Rebecca Fisher and Aaron T. Fleischauer and Ashley Grant and Jennifer Shoener Griffin and Meredith Haddix and Julie P Hand and Matthew P. Hanson and Eric R Hawkins and Rachel K. Herlihy and Liam Hicks and Corinne Holtzman and Mikhail Hoskins and Judie K. Hyun and Ramandeep Kaur and Meagan Kay and Holly S Kidrowski and Curi Kim and Kenneth Komatsu and Kiersten J. Kugeler and Melissa Lewis and B. Casey Lyons and Shelby L. Lyons and Ruth Lynfield and Keegan McCaffrey and Chelsea L McMullen and Lauren Milroy and St{\'e}phanie Meyer and Leisha D. Nolen and Monita R. Patel and Sargis Pogosjans and Heather E. Reese and Amy Saupe and Jessica Sell and Theresa M Sokol and Daniel M. Sosin and Emma Stanislawski and Kelly Stevens and Hailey Vest and Kelly White and Erica Wilson and Adam MacNeil and Matthew D. Ritchey and Benjamin J. Silk},
  journal={Morbidity and Mortality Weekly Report},
  year={2021},
  volume={70},
  pages={1284 - 1290}
}
COVID-19 vaccine breakthrough infection surveillance helps monitor trends in disease incidence and severe outcomes in fully vaccinated persons, including the impact of the highly transmissible B.1.617.2 (Delta) variant of SARS-CoV-2, the virus that causes COVID-19. Reported COVID-19 cases, hospitalizations, and deaths occurring among persons aged ≥18 years during April 4-July 17, 2021, were analyzed by vaccination status across 13 U.S. jurisdictions that routinely linked case surveillance and… 

Figures from this paper

Incidence of SARS-CoV-2 infection among COVID-19 vaccinated and unvaccinated healthcare personnel, first responders, and other essential and frontline workers: Eight US locations, January-September 2021.
TLDR
COVID-19 vaccination was significantly associated with a lower risk of SARS-CoV-2 infection despite Delta variant predominance, and the added protective benefit of facemask use among both unvaccinated and vaccinated frontline workers is demonstrated.
Incidence of SARS-CoV-2 Infection, Emergency Department Visits, and Hospitalizations Because of COVID-19 Among Persons Aged ≥12 Years, by COVID-19 Vaccination Status - Oregon and Washington, July 4-September 25, 2021.
TLDR
Population-based rates of infection with SARS-CoV-2 and related health care utilization help determine estimates of COVID-19 vaccine effectiveness and averted illnesses, including illness and hospitalization caused by the Delta variant.
Risk Factors for Severe COVID-19 Outcomes Among Persons Aged ≥18 Years Who Completed a Primary COVID-19 Vaccination Series — 465 Health Care Facilities, United States, December 2020–October 2021
TLDR
Severe COVID-19 outcomes after primary vaccination are rare; however, vaccinated persons who are aged ≥65 years, are immunosuppressed, or have other underlying conditions might be at increased risk.
COVID-19 Vaccine Effectiveness by Product and Timing in New York State
TLDR
Declines in VE for cases may have been primarily driven by factors other than waning, with modest declines limited to Pfizer-BioNTech and Moderna recipients [≥]65 years, supporting targeted booster dosing recommendations.
Reduced Odds of SARS-CoV-2 Reinfection after Vaccination among New York City Adults, June-August 2021
TLDR
Among adults with previous SARS-CoV-2 infection, vaccination reduced odds of reinfections when the Delta variant predominated and all three vaccines authorized or approved for use in the U.S. were similarly effective.
Age and product dependent vaccine effectiveness against SARS-CoV-2 infection and hospitalisation among adults in Norway: a national cohort study, January to September 2021.
TLDR
Good protection against SARS-CoV-2 infection and severe disease in fully vaccinated, including heterologous vaccine regimens, which could facilitate rapid immunization is demonstrated.
Effectiveness of Vaccination Against Reported SARS-CoV-2 Infection in United States Coast Guard Personnel Between May and August 2021: A Time-Series Analysis
TLDR
Overall vaccine effectiveness among CG personnel decreased during the summer months of 2021, but continued to provide substantial protection, as well as full protection against the most serious outcomes, in this study.
Monitoring populations at increased risk for SARS-CoV-2 infection in the community using population-level demographic and behavioural surveillance
Background The COVID-19 pandemic is rapidly evolving, with emerging variants and fluctuating control policies. Real-time population screening and identification
Multistate Outbreak of SARS-CoV-2 Infections, Including Vaccine Breakthrough Infections, Associated with Large Public Gatherings, United States
TLDR
1,098 primary cases and 30 secondary cases associated with 26 primary cases among fully and non–fully vaccinated persons are identified, and fully vaccinated persons should take precautions, such as masking, to prevent SARS-CoV-2 transmission, particularly during substantial or high transmission.
Predominance of antibody-resistant SARS-CoV-2 variants in vaccine breakthrough cases from the San Francisco Bay Area, California
TLDR
It is suggested that vaccine breakthrough cases are preferentially caused by circulating antibody-resistant SARS-CoV-2 variants, and that symptomatic breakthrough infections may potentially transmit COVID-19 as efficiently as unvaccinated infections, regardless of the infecting lineage.
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 15 REFERENCES
COVID-19-associated hospitalizations among vaccinated and unvaccinated adults >=18 years - COVID-NET, 13 states, January 1 - July 24, 2021
TLDR
Population-based hospitalization rates show that unvaccinated adults aged [≥]18 years are 17 times more likely to be hospitalized compared with vaccinated adults, including during a period when the Delta variant was the predominant strain of the SARS-CoV-2 virus.
New COVID-19 Cases and Hospitalizations Among Adults, by Vaccination Status — New York, May 3–July 25, 2021
TLDR
These findings support the implementation of a layered approach centered on vaccination, as well as other prevention strategies such as masking and physical distancing, to reduce new COVID-19 cases and hospitalizations.
New COVID-19 Cases and Hospitalizations Among Adults, by Vaccination Status — New York, May 3–July 25, 2021
TLDR
These findings support the implementation of a layered approach centered on vaccination, as well as other prevention strategies such as masking and physical distancing, to reduce new COVID-19 cases and hospitalizations.
SARS-CoV-2 Infections and Hospitalizations Among Persons Aged ≥16 Years, by Vaccination Status — Los Angeles County, California, May 1–July 25, 2021
TLDR
These infection and hospitalization rate data indicate that authorized vaccines were protective against SARS-CoV-2 infection and severe COVID-19 during a period when transmission of the Delta variant was increasing.
Effectiveness of COVID-19 Vaccines in Preventing SARS-CoV-2 Infection Among Frontline Workers Before and During B.1.617.2 (Delta) Variant Predominance — Eight U.S. Locations, December 2020–August 2021
TLDR
This report updates vaccine effectiveness (VE) estimates including all COVID-19 vaccines available through August 14, 2021, and examines whether VE differs for adults with increasing time since completion of all recommended vaccine doses.
Sustained Effectiveness of Pfizer-BioNTech and Moderna Vaccines Against COVID-19 Associated Hospitalizations Among Adults — United States, March–July 2021
TLDR
Effectiveness of mRNA vaccines against CO VID-19-associated hospitalization was sustained over a 24-week period, including among groups at higher risk for severe COVID-19; ongoing monitoring is needed as new SARS-CoV-2 variants emerge.
COVID-19–associated hospitalizations among vaccinated and unvaccinated adults
  • medRxiv [Preprint posted online August
  • 2021
HEROES-RECOVER Cohorts. Effectiveness of COVID-19 vaccines in preventing SARS-CoV-2 infection among frontline workers before and during B.1.617.2 (Delta) variant predominance—eight U.S
  • MMWR Morb Mortal Wkly Rep 2021;70:1167–9
  • 2020
* Rates are standardized by age, according to the enumerated 2000 U.S. Census age distribution. Blue vertical lines indicate when the B.1.617.2 (Delta) variant reached a threshold of >50%
...
1
2
...