Alliance for Pandemic Preparedness

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Tag: travel

June 10, 2021

Associations of Vaccination and of Prior Infection With Positive PCR Test Results for SARS-CoV-2 in Airline Passengers Arriving in Qatar

Travelers fully vaccinated with a COVID-19 mRNA vaccine (n=10,092) had an 87% lower likelihood of having a positive SARS-CoV-2 PCR test upon arrival at Hamad International Airport in Qatar between February and April 2021 compared to travelers with no record of vaccination or prior infection matched 1:1 by age, sex, nationality, and date of testing…

April 22, 2021

Airport Traveler Testing Program for SARS-CoV-2 — Alaska, June–November 2020

0.8% of passengers arriving to Alaska from June to November 14, 2020 tested positive for SARS-CoV-2 (951 of 126,000 tests). Passengers tested on arrival made up roughly a third of all air travelers arriving in Alaska during the study period, as other travelers opted to be tested within 72 hours before arrival or to self-quarantine…

April 14, 2021

Laboratory Modeling of SARS-CoV-2 Exposure Reduction Through Physically Distanced Seating in Aircraft Cabins Using Bacteriophage Aerosol — November 2020

A laboratory model of airborne SARS-CoV-2 transmission on single- and twin-aisle aircraft found that exposures were reduced by 23-57% in seating scenarios when the middle seat was left vacant compared to when every seat was filled. Data from a study which examined aerosolized dispersion of a non-pathogenic respiratory virus in various airline cabin mock-ups from…

April 5, 2021

COVID-19 Rapid Antigen Test as Screening Strategy at Points of Entry: Experience in Lazio Region, Central Italy, August–October 2020

Between mid-August to mid-October 2020, 1,176 of 73,643 rapid antigen test results (1.6%) were positive for travelers at points of entry in the Lazio Region of Italy via the STANDARD F COVID-19 Ag FIA, but only 40.5% antigen-positive samples also tested positive by RT-PCR. Antigen tests with a higher semiquantitative result were more likely to…

March 30, 2021

Successful Control of an Onboard COVID-19 Outbreak Using the Cruise Ship as a Quarantine Facility, Western Australia

Onboard quarantine measures to reduce the risk of a SARS-CoV-2 outbreak among crew members of the cruise ship MS Artania led to no symptomatic infections among crew members after completion of quarantine, despite an attack rate of 6% (30 of 503) before quarantine and 5% (21 of 441) during quarantine on board. The outbreak occurred…

March 29, 2021

Comparison of Cough Particle Exposure for Indoor Commercial and Aircraft Cabin Spaces

[Pre-print, not peer-reviewed] Computational fluid dynamics (CFD) simulations from Boeing showed that in an airplane cabin (Boeing 737), 80% of particles from a coughing person were removed 5-12 times faster than from a similar indoor commercial space, which resulted in 7 times less particulate mass inhaled.  Davis et al. (Mar 26, 2021). Comparison of Cough Particle…

March 9, 2021

A Rapid Method to Evaluate Pre-Travel Testing Programs for COVID-19 A Study in Hawaii

[Pre-print, not peer-reviewed] A rapid field study conducted in the Kahului main airport in Maui, Hawaii identified 2 SARS-CoV-2 PCR positive participants out of 279 consecutively sampled participants boarding for departure, despite all participants having a negative PCR test 72 hours prior. This positivity rate corresponded to 7 cases per 1,000 travelers, which corresponds to…

December 28, 2020

“There’s No Place Like Home for The Holidays:” Travel and SARS-CoV-2 Test Positivity Following Thanksgiving Weekend

[pre-print; not peer-reviewed] An online panel survey administered December 4-18, 2020 to individuals from 10 US states (n = 7,905) found that many individuals reported spending Thanksgiving outside of their home (26%) or at home with at least one non-household member (27%). Planned travel over the December holidays was more common among those who tested…

November 25, 2020

Reducing Travel-Related SARS-CoV-2 Transmission with Layered Mitigation Measures Symptom Monitoring Quarantine and Testing

[Pre-print; not peer-reviewed] A model built to assess the relative impact of symptom monitoring, testing, and quarantine practices on transmission of SARS-CoV-2 by infected travelers suggests that quarantining for 14 days almost eliminates risk of transmission. The effectiveness of testing depended on timing and quality of the test, with the combination of a pre-travel test…