{"doi":"10.7326/m23-2451","title":"Evaluation of Strategies for Transitioning to Annual SARS-CoV-2 Vaccination Campaigns in the United States","abstract":"BACKGROUND: The U.S. Food and Drug Administration has proposed administering annual SARS-CoV-2 vaccines. OBJECTIVE: To evaluate the effectiveness of an annual SARS-CoV-2 vaccination campaign, quantify the health and economic benefits of a second dose provided to children younger than 2 years and adults aged 50 years or older, and optimize the timing of a second dose. DESIGN: An age-structured dynamic transmission model. SETTING: United States. PARTICIPANTS: A synthetic population reflecting demographics and contact patterns in the United States. INTERVENTION: Vaccination against SARS-CoV-2 with age-specific uptake similar to that of influenza vaccination. MEASUREMENTS: Incidence, hospitalizations, deaths, and direct health care cost. RESULTS: The optimal timing between the first and second dose delivered to children younger than 2 years and adults aged 50 years or older in an annual vaccination campaign was estimated to be 5 months. In direct comparison with a single-dose campaign, a second booster dose results in 123 869 fewer hospitalizations (95% uncertainty interval [UI], 121 994 to 125 742 fewer hospitalizations) and 5524 fewer deaths (95% UI, 5434 to 5613 fewer deaths), averting $3.63 billion (95% UI, $3.57 billion to $3.69 billion) in costs over a single year. LIMITATIONS: Population immunity is subject to degrees of immune evasion for emerging SARS-CoV-2 variants. The model was implemented in the absence of nonpharmaceutical interventions and preexisting vaccine-acquired immunity. CONCLUSION: The direct health care costs of SARS-CoV-2, particularly among adults aged 50 years or older, would be substantially reduced by administering a second dose 5 months after the initial dose. PRIMARY FUNDING SOURCE: Natural Sciences and Engineering Research Council of Canada, Notsew Orm Sands Foundation, National Institutes of Health, Centers for Disease Control and Prevention, and National Science Foundation.","journal":"Annals of Internal Medicine","year":2024,"id":465128,"datarank":0.0,"base_score":0.0,"endowment":0.0,"self_citation_contribution":0.0,"citation_network_contribution":0.0,"self_endowment_contribution":0.0,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":4,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":0.9343,"is_data_producer":false,"deposit_databanks":null,"is_oa":true,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":"2024-01-01","fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":110259,"name":"Abhishek Pandey","orcid":"0000-0003-4578-7487","position":1,"is_corresponding":false},{"id":110258,"name":"Seyed M. Moghadas","orcid":"0000-0003-4414-0227","position":2,"is_corresponding":false},{"id":225894,"name":"Meagan C. Fitzpatrick","orcid":"0000-0002-5248-2668","position":3,"is_corresponding":false},{"id":110264,"name":"Burton H. Singer","orcid":"0000-0002-5295-5971","position":4,"is_corresponding":false},{"id":110265,"name":"Alison P. Galvani","orcid":"0000-0002-2059-6716","position":5,"is_corresponding":false},{"id":110256,"name":"Chad R. Wells","orcid":"0000-0003-1370-8350","position":0,"is_corresponding":true}],"reference_count":40,"raw_metadata":null,"created_at":"2026-07-19T02:04:46.201722Z","pmid":"38527289","pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}