Universal COVID-19 Vaccine Guidance: Stronger Protection
Summary of the Study on US COVID-19 Projections (April 2024 – April 2025)
this study modeled the potential impact of different vaccination strategies and immune escape on COVID-19 burden in the United States from April 2024 to April 2025. Here’s a breakdown of the key findings:
Methods:
* Scenarios: Six scenarios were modeled, varying by:
* Level of immune escape (high vs. low)
* Vaccination recommendation: 1) No recommendation; 2) Vaccination only for high-risk groups (≥ 65 years or underlying conditions); 3) Recommendation for all people aged ≥ 6 months.
* Vaccines: New vaccines targeting circulating variants are expected to be available September 1, 2024, with 75% vaccine effectiveness (Ve) against hospitalization.
* Data & Analysis: The models used data from September 2023 to April 2024, considered immunity from infection, and combined individual projections using meta-analytical methods. Results are presented with 95% projection intervals (PI) and confidence intervals (CI).
Key Results:
* Overall Burden: The models predict the US COVID-19 burden from April 2024 to April 2025 will be similar to the previous year. Hospitalizations are expected to remain below the CDC “High” level overall.
* Best Case Scenario (Low immune escape, universal vaccination): 550,000 hospitalizations (95% PI: 296,000 – 832,000) and 42,000 deaths (95% PI: 13,000 – 72,000).
* Worst Case Scenario (High immune escape, no pediatric vaccination): 931,000 hospitalizations (95% PI: 0.5 – 1.3 million) and 62,000 deaths (95% PI: 18,000 – 115,000).
* Most Likely Scenario (High immune escape, universal vaccination): 814,000 hospitalizations (95% PI: 400,000 – 1.2 million) and 54,000 deaths (95% PI: 17,000 – 98,000).
* Age Impact: Adults ≥ 65 years old are projected to account for 51-62% of hospitalizations and 84-87% of deaths.
The study includes a graph illustrating weekly projections of hospitalizations and deaths under the different scenarios, comparing them to CDC thresholds. Data reliability varied between May 5, 2024 and November 2, 2024.