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Risk of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) Transmission Among Air Passengers in China.
Hu, Maogui; Wang, Jinfeng; Lin, Hui; Ruktanonchai, Corrine W; Xu, Chengdong; Meng, Bin; Zhang, Xin; Carioli, Alessandra; Feng, Yuqing; Yin, Qian; Floyd, Jessica R; Ruktanonchai, Nick W; Li, Zhongjie; Yang, Weizhong; Tatem, Andrew J; Lai, Shengjie.
  • Hu M; Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China.
  • Wang J; Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China.
  • Lin H; China Academy of Electronics and Information Technology, Beijing, China.
  • Ruktanonchai CW; WorldPop, School of Geography and Environmental Science, University of Southampton, Southampton, UK.
  • Xu C; Population Health Sciences, Virginia Tech, Blacksburg, Virginia, USA.
  • Meng B; Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China.
  • Zhang X; Beijing Union University, Beijing, China.
  • Carioli A; Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing, China.
  • Feng Y; WorldPop, School of Geography and Environmental Science, University of Southampton, Southampton, UK.
  • Yin Q; Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China.
  • Floyd JR; Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China.
  • Ruktanonchai NW; WorldPop, School of Geography and Environmental Science, University of Southampton, Southampton, UK.
  • Li Z; WorldPop, School of Geography and Environmental Science, University of Southampton, Southampton, UK.
  • Yang W; Population Health Sciences, Virginia Tech, Blacksburg, Virginia, USA.
  • Tatem AJ; Divisions of Infectious Diseases, Chinese Center for Disease Control and Prevention, Beijing, China.
  • Lai S; School of Population Medicine and Public Health, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.
Clin Infect Dis ; 75(1): e234-e240, 2022 08 24.
Article in English | MEDLINE | ID: covidwho-2017762
ABSTRACT

BACKGROUND:

Modern transportation plays a key role in the spread of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and new variants. However, little is known about the exact transmission risk of the virus on airplanes.

METHODS:

Using the itinerary and epidemiological data of coronavirus disease 2019 (COVID-19) cases and close contacts on domestic airplanes departing from Wuhan city in China before the lockdown on 23 January 2020, we estimated the upper and lower bounds of overall transmission risk of COVID-19 among travelers.

RESULTS:

In total, 175 index cases were identified among 5797 passengers on 177 airplanes. The upper and lower attack rates (ARs) of a seat were 0.60% (34/5622, 95% confidence interval [CI] .43-.84%) and 0.33% (18/5400, 95% CI .21-.53%), respectively. In the upper- and lower-bound risk estimates, each index case infected 0.19 (SD 0.45) and 0.10 (SD 0.32) cases, respectively. The seats immediately adjacent to the index cases had an AR of 9.2% (95% CI 5.7-14.4%), with a relative risk 27.8 (95% CI 14.4-53.7) compared to other seats in the upper limit estimation. The middle seat had the highest AR (0.7%, 95% CI .4%-1.2%). The upper-bound AR increased from 0.7% (95% CI 0.5%-1.0%) to 1.2% (95% CI .4-3.3%) when the co-travel time increased from 2.0 hours to 3.3 hours.

CONCLUSIONS:

The ARs among travelers varied by seat distance from the index case and joint travel time, but the variation was not significant between the types of aircraft. The overall risk of SARS-CoV-2 transmission during domestic travel on planes was relatively low. These findings can improve our understanding of COVID-19 spread during travel and inform response efforts in the pandemic.
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Full text: Available Collection: International databases Database: MEDLINE Main subject: SARS-CoV-2 / COVID-19 Type of study: Observational study / Prognostic study Topics: Variants Limits: Humans Country/Region as subject: Asia Language: English Journal: Clin Infect Dis Journal subject: Communicable Diseases Year: 2022 Document Type: Article Affiliation country: Cid

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Full text: Available Collection: International databases Database: MEDLINE Main subject: SARS-CoV-2 / COVID-19 Type of study: Observational study / Prognostic study Topics: Variants Limits: Humans Country/Region as subject: Asia Language: English Journal: Clin Infect Dis Journal subject: Communicable Diseases Year: 2022 Document Type: Article Affiliation country: Cid