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COVID-19-Associated Hospitalizations Among U.S. Adults Aged ≥18 Years - COVID-NET, 12 States, October 2023-April 2024
MMWR. Morbidity and Mortality Weekly Report
|October 3, 2024
Summary
Older adults, especially those 75 and older, face higher COVID-19 hospitalization risks. Despite lower overall rates, vaccination and early antiviral treatment remain crucial for high-risk individuals.
Area of Science:
- Epidemiology
- Public Health
- Infectious Diseases
Background:
- COVID-19 hospitalization rates in adults are known to increase with age.
- Surveillance data is critical for understanding disease burden and informing public health strategies.
Purpose of the Study:
- To estimate population-based COVID-19 hospitalization rates among U.S. adults from October 2023 to April 2024.
- To identify demographic and clinical characteristics of hospitalized adult COVID-19 patients.
- To assess trends in COVID-19 hospitalization rates compared to previous years.
Main Methods:
- Analysis of data from the COVID-19-Associated Hospitalization Surveillance Network.
- Estimation of age-specific and cumulative COVID-19 hospitalization rates.
- Characterization of hospitalized patients, including vaccination status, underlying conditions, and long-term care facility residency.
Main Results:
- Adults aged 65 and older accounted for 70% of all adult COVID-19 hospitalizations.
- Hospitalization rates were highest in adults aged 65 and older.
- Despite being the lowest October-April rates since 2020-2021, rates for adults 75+ approached 1 per 100 persons.
- Among hospitalized adults, 88.1% were unvaccinated with the 2023-2024 vaccine, 80.0% had multiple comorbidities, and 16.6% resided in long-term care facilities.
Conclusions:
- While overall COVID-19 hospitalization rates decreased, older adults remain at higher risk.
- High-risk groups, including those 65+ and long-term care facility residents, need continued focus on prevention.
- Recommendations include COVID-19 vaccination, risk reduction measures, and prompt antiviral treatment upon diagnosis.
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