The DOI matches its Crossref record; 5 of the 5 references it cites were found in a registry or an index.
COVID-19 Incidence and Death Rates Among Unvaccinated and Fully Vaccinated Adults with and Without Booster Doses During Periods of Delta and Omicron Variant Emergence — 25 U.S. Jurisdictions, April 4–December 25, 2021
Open accessAbstract
case and death rates and incidence rate ratios (IRRs) were estimated among unvaccinated and fully vaccinated adults by receipt of booster doses during pre-Delta (April-May 2021), Delta emergence (June 2021), Delta predominance (July-November 2021), and Omicron emergence (December 2021) periods in the United States. During 2021, averaged weekly, age-standardized case IRRs among unvaccinated persons compared with fully vaccinated persons decreased from 13.9 pre-Delta to 8.7 as Delta emerged, and to 5.1 during the period of Delta predominance. During October-November, unvaccinated persons had 13.9 and 53.2 times the risks for infection and COVID-19-associated death, respectively, compared with fully vaccinated persons who received booster doses, and 4.0 and 12.7 times the risks compared with fully vaccinated persons without booster doses. When the Omicron variant emerged during December 2021, case IRRs decreased to 4.9 for fully vaccinated persons with booster doses and 2.8 for those without booster doses, relative to October-November 2021. The highest impact of booster doses against infection and death compared with full vaccination without booster doses was recorded among persons aged 50-64 and ≥65 years. Eligible persons should stay up to date with COVID-19 vaccinations.
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Data Reduction and Error Analysis for the Physical Sciences
Bevington, P. R., Robinson, D. K., Blair, J. M., Mallinckrodt, A. J., & McKay, S. (1993) · Computers in Physics · doi:10.1063/1.4823194 · Cited by 14,824
Accorsi, E. K., Britton, A., Fleming-Dutra, K. E., Smith, Z. R., Shang, N., Derado, G., Miller, J., Schrag, S. J., & Verani, J. R. (2022) · JAMA · doi:10.1001/jama.2022.0470 · Cited by 628
Generic Indicators of Ecological Resilience: Inferring the Chance of a Critical Transition
Scheffer, M., Carpenter, S. R., Dakos, V., & van Nes, E. H. (2015) · Annual Review of Ecology, Evolution, and Systematics · doi:10.1146/annurev-ecolsys-112414-054242 · Cited by 535
SARS-CoV-2 B.1.1.529 (Omicron) Variant — United States, December 1–8, 2021
CDC COVID-19 Response Team (2021) · MMWR. Morbidity and Mortality Weekly Report · doi:10.15585/mmwr.mm7050e1 · Cited by 299
Scobie, H. M., Johnson, A. G., Suthar, A. B., Severson, R., Alden, N. B., Balter, S., Bertolino, D., Blythe, D., Brady, S., Cadwell, B., et al. (2021) · MMWR. Morbidity and Mortality Weekly Report · doi:10.15585/mmwr.mm7037e1 · Cited by 298
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Cited by
Lauring, A. S., Tenforde, M. W., Chappell, J. D., Gaglani, M., Ginde, A. A., McNeal, T., Ghamande, S., Douin, D. J., Talbot, H. K., Casey, J. D., et al. (2022) · BMJ · doi:10.1136/bmj-2021-069761 · Cited by 656
Chu, L., Montefiori, D., Huang, W., Nestorova, B., Chang, Y., Carfi, A., Edwards, D. K., Oestreicher, J., Legault, H., Girard, B., et al. (2021) · doi:10.1101/2021.09.29.21264089 · Cited by 105
Barh, D., Tiwari, S., Rodrigues Gomes, L. G., Ramalho Pinto, C. H., Andrade, B. S., Ahmad, S., Aljabali, A. A. A., Alzahrani, K. J., Banjer, H. J., Hassan, S. S., et al. (2023) · Inflammation · doi:10.1007/s10753-022-01734-w · Cited by 50
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COVID-19 and intestinal ischemia: a multicenter case series
Sarkardeh, M., Meftah, E., Mohammadzadeh, N., Koushki, J., & Sadrzadeh, Z. (2022) · Frontiers in Medicine · doi:10.3389/fmed.2022.879996 · Cited by 13
Metadata
- Authors
- Johnson, A. G., Amin, A. B., Ali, A. R., Hoots, B., Cadwell, B. L., Arora, S., Avoundjian, T., Awofeso, A. O., Barnes, J., Bayoumi, N. S., Busen, K., Chang, C., Cima, M., Crockett, M., Cronquist, A., Davidson, S., Davis, E., Delgadillo, J., Dorabawila, V., Drenzek, C., Eisenstein, L., Fast, H. E., Gent, A., Hand, J., Hoefer, D., Holtzman, C., Jara, A., Jones, A., Kamal-Ahmed, I., Kangas, S., Kanishka, F., Kaur, R., Khan, S., King, J., Kirkendall, S., Klioueva, A., Kocharian, A., Kwon, F. Y., Logan, J., Lyons, B. C., Lyons, S., May, A., McCormick, D., MSHI, Mendoza, E., Milroy, L., O’Donnell, A., Pike, M., Pogosjans, S., Saupe, A., Sell, J., Smith, E., Sosin, D. M., Stanislawski, E., Steele, M. K., Stephenson, M., Stout, A., Strand, K., Tilakaratne, B. P., Turner, K., Vest, H., Warner, S., Wiedeman, C., Zaldivar, A., Silk, B. J., & Scobie, H. M.
- Venue
- MMWR. Morbidity and Mortality Weekly Report
- Published
- 2022-01-28
- Volume
- 71
- Issue
- 4
- Pages
- 132-138
- ISSN
- 0149-2195 (ISSN-L)
- 1545-861X
- OpenAlex
- W4207082385
- Cited by
- 359
- References
- 5
- FWCI
- 39.92
- Type
- journal article
- Language
- en
- Open access
- diamond
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- CoChat. (2026). Citation check: COVID-19 Incidence and Death Rates Among Unvaccinated and Fully Vaccinated Adults with and Without Booster Doses During Periods of Delta and Omicron Variant Emergence — 25 U.S. Jurisdictions, April 4–December 25, 2021. https://app.cochat.ai/papers/10.15585/mmwr.mm7104e2
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- Johnson, A. G., Amin, A. B., Ali, A. R., Hoots, B., Cadwell, B. L., Arora, S., Avoundjian, T., Awofeso, A. O., Barnes, J., Bayoumi, N. S., Busen, K., Chang, C., Cima, M., Crockett, M., Cronquist, A., Davidson, S., Davis, E., Delgadillo, J., Dorabawila, V., . . . Scobie, H. M. (2022). COVID-19 Incidence and Death Rates Among Unvaccinated and Fully Vaccinated Adults with and Without Booster Doses During Periods of Delta and Omicron Variant Emergence — 25 U.S. Jurisdictions, April 4–December 25, 2021. MMWR. Morbidity and Mortality Weekly Report. https://doi.org/10.15585/mmwr.mm7104e2
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.