ArticleMMWR. Morbidity and mortality weekly report2023
Effect of Predeparture Testing on Postarrival SARS-CoV-2-Positive Test Results Among International Travelers - CDC Traveler-Based Genomic Surveillance Program, Four U.S. Airports, March-September 2022.
Article in MMWR. Morbidity and mortality weekly report, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
13 citing papers in PubMed, 21 citations in OpenAlex.
- Article
- Point-of-care and Home Use Influenza Diagnostics for Advancing Therapeutic and Public Health Strategies.The Journal of infectious diseases · 2025Review
- A fundamental limit to the effectiveness of traveller screening with molecular tests.Epidemiology and infection · 2025Article
- Aircraft lavatory wastewater surveillance for movement of antimicrobial resistance genes: a proof-of-concept study.Microbiology spectrum · 2025Article
- Leveraging a Strategic Public-Private Partnership to Launch an Airport-Based Pathogen Monitoring Program to Detect Emerging Health Threats.Emerging infectious diseases · 2025Article
- Pandemic monitoring with global aircraft-based wastewater surveillance networks.Nature medicine · 2025Article
- Assessing exit screening of SARS-CoV-2 in Japan: an analysis of the airport screening data of passengers from the United Kingdom, 2020-2022.BMC infectious diseases · 2024Article
- Optimization and performance analytics of global aircraft-based wastewater surveillance networks.medRxiv : the preprint server for health sciences · 2024Article
- Evaluation of the exit screening policy among travelers arriving from Asian and pacific nations.BMC infectious diseases · 2024Article
- Article
- Demographic and travel characteristics and self-reported predeparture SARS-CoV-2 testing behavior in air passengers entering the United States from foreign destinations from July to September 2021.Immunity, inflammation and disease · 2023Article
- Article
- Modeling approaches to inform travel-related policies for COVID-19 containment: A scoping review and future directions.Travel medicine and infectious diseaseArticle
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
12 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Beginning December 6, 2021, all international air passengers boarding flights to the United States were required to show either a negative result from a SARS-CoV-2 viral test taken ≤1 day before departure or proof of recovery from COVID-19 within the preceding 90 days (1). As of June 12, 2022, predeparture testing was no longer mandatory but remained recommended by CDC (2,3). Various modeling studies have estimated that predeparture testing the day before or the day of air travel reduces transmission or importation of SARS-CoV-2 by 31%-76% (4-7). Postarrival SARS-CoV-2 pooled testing data from CDC's Traveler-based Genomic Surveillance program were used to compare SARS-CoV-2 test results among volunteer travelers arriving at four U.S. airports during two 12-week periods: March 20-June 11, 2022, when predeparture testing was required, and June 12-September 3, 2022, when predeparture testing was not required. In a multivariable logistic regression model, pooled nasal swab specimens collected during March 20-June 11 were 52% less likely to be positive for SARS-CoV-2 than were those collected during June 12-September 3, after adjusting for COVID-19 incidence in the flight's country of origin, sample pool size, and collection airport (adjusted odds ratio [aOR] = 0.48, 95% CI = 0.39-0.58) (p<0.001). These findings support predeparture testing as a tool for reducing travel-associated SARS-CoV-2 transmission and provide important real-world evidence that can guide decisions for future outbreaks and pandemics.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.