1887
Volume 2021, Issue 3
  • ISSN: 0253-8253
  • EISSN: 2227-0426

Abstract

Public health control measures for communicable diseases are often based on the identification of symptomatic cases. However, emerging epidemiological evidence demonstrates the role of pre-symptomatic and asymptomatic transmissions of coronavirus disease 2019 (COVID-19). Understanding high-risk settings where transmissions can occur from infected individuals without symptoms has become critical for improving the response to the pandemic. In this review, we discussed the evidence on the transmission of severe acute respiratory syndrome coronavirus-2, its effect on control strategies, and lessons that can be applied in Qatar. Although Qatar has a small population, it has a distinct setting for COVID-19 control. It has a largely young population and is mostly composed of expatriates particularly from the Middle East and Asia that reside in Qatar for work. Further key considerations for Qatar and travel include population movement during extended religious holiday periods, screening and tracing of visitors and residents at entry points into the country, and expatriates living and working in high-density settings. We also consider how its international airport serves as a major transit destination for the region, as Qatar is expected to experience a rapid expansion of visitors while preparing to host the FIFA World Cup in 2022.

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2021-10-25
2024-04-16
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References

  1. Petersen E, Koopmans M, Go U, et al. Comparing SARS-CoV-2 with SARS-CoV and influenza pandemics, Lancet Infect Dis 2020; 20:(9):e238–e244.
    [Google Scholar]
  2. Petrosillo N, Viceconte G, Ergonul O, et al. COVID-19, SARS and MERS: are they closely related?, Clin Microbiol Infect 2020 26:(6):729–734.
    [Google Scholar]
  3. Killerby ME, Biggs HM, Midgley CM, et al. Middle East respiratory syndrome coronavirus transmission, Emerg Infect Dis 2020 26:(2):191–198.
    [Google Scholar]
  4. Al Kuwari HM, Abdul Rahim HF, Abu-Raddad LJ, et al. Epidemiological investigation of the first 5685 cases of SARS-CoV-2 infection in Qatar, 28 February 2018 April 2020, BMJ Open 2020 10:(10):e040428.
    [Google Scholar]
  5. Al-Kuwari MG, Abdulmalik MA, Bakri AH, et al. Epidemiological characteristics of the primary health care workers in Qatar: March–October 2020, Front Public Health 2021;9:679254.
    [Google Scholar]
  6. Ministry of Public Health. COVID19 status in Qatar [Internet], Doha: Government of Qatar; 2021. Available from: https://www.data.gov.qa/pages/dashboard-covid-19-cases-in-qatar .
  7. Planning and Statistics Authority, Population and statistics quarterly bulletin: first quarter 2021, Doha: PSA; 2021.
  8. Planning and Statistics Authority, Labor force sample survey 2019: statistical analysis, Doha: PSA; 2019.
  9. International Civil Aviation Authority, FIFA World Cup, ICAA; 2020 [updated 2020 Sep 20; cited 2021 Sep 11]; 2022 [Internet]. Available from: https://www.icao.int/MID/Documents/2019/FWC2022%20TF2/FWC2022%20TF2%20PPT2.pdf .
  10. Wu S, Wang Y, Jin X, et al. Environmental contamination by SARS-CoV-2 in a designated hospital for coronavirus disease 2019, Am J Infect Control 2020 48:(8):910–914.
    [Google Scholar]
  11. Wei L, Lin J, Duan X, et al. Asymptomatic COVID-19 patients can contaminate their surroundings: an environment sampling study, mSphere 2020; 5:(3).
    [Google Scholar]
  12. Leclerc QJ, Fuller NM, Knight LE, et al. What settings have been linked to SARS-CoV-2 transmission clusters?, Wellcome Open Res 2020 5:(83):83.
    [Google Scholar]
  13. World Health Organization. Coronavirus disease 2019 situation report – 73 [Internet], Geneva: WHO; 2020. Available from: https://www.who.int/docs/default-source/coronaviruse/situation-reports/20200402-sitrep-73-covid-19.pdf?sfvrsn = 5ae25bc7_6 .
  14. World Health Organization. Transmission of SARS-CoV-2: implications for infection prevention precautions [Internet], Geneva: WHO; 2020. Available from: https://www.who.int/publications/i/item/modes-of-transmission-of-virus-causing-covid-19-implications-for-ipc-precaution-recommendations .
  15. Lauer SA, Grantz KH, Bi Q, et al. The incubation period of coronavirus disease 2019 (CoVID-19) from publicly reported confirmed cases: estimation and application, Ann Intern Med 2020 172:(9):577–582.
    [Google Scholar]
  16. Lui Y, Yan LM, Wan L, et al. Viral dynamics in mild and severe cases of COVID-19, Lancet Infect Dis 2002 20:(6):656-657.
    [Google Scholar]
  17. Arons MM, Hatfield KM, Reddy SC, et al. Presymptomatic SARS-CoV-2 infections and transmission in a skilled nursing facility, N Engl J Med 2020 382:(22):2081–2090.
    [Google Scholar]
  18. Tong ZD, Tang A, Li KF, et al. Potential presymptomatic transmission of SARS-CoV-2, Zhejiang Province, China, 2020, Emerg Infect Dis 2020 26:(5):1052–1054.
    [Google Scholar]
  19. Yu P, Zhu J, Zhang Z, et al. A familial cluster of infection associated with the 2019 novel coronavirus indicating possible person-to-person transmission during the incubation period, J Infect Dis 2020 221:(11):1751–1761.
    [Google Scholar]
  20. Ganyani T, Kremer C, Chen D, et al. Estimating the generation interval for coronavirus disease (COVID-19) based on symptom onset data, March 2020, Eurosurveillance 2020; 25:(17).
    [Google Scholar]
  21. He X, Lau EHY, Wu P, et al. Temporal dynamics in viral shedding and transmissibility of COVID-19, Nat Med 2020 26:(5):672–675.
    [Google Scholar]
  22. Wei WE, Li Z, Chiew CJ, et al. Presymptomatic transmission of SARS-CoV-2 - Singapore, January 23 - March 16, 2020, MMWR Morb Mortal Wkly Rep 2020 69:(14):411–415.
    [Google Scholar]
  23. Heneghan C, Brassey J, Jefferson T. COVID-19: what proportion are asymptomatic? [Internet], Oxford: CEBM; 2020. Available from: https://www.cebm.net/covid-19/covid-19-what-proportion-are-asymptomatic .
  24. Byambasuren O, Cardona M, Bell K, et al. Estimating the extent of true asymptomatic COVID-19 and its potential for community transmission: systematic review and meta-analysis, JAMMI 2020 5:(4):223–234.
    [Google Scholar]
  25. Johansson MA, Quandelacy TM, Kada S, et al. SARS-CoV-2 transmission from people without COVID-19 symptoms, JAMA Network Open 2021 4:(1):e2035057.
    [Google Scholar]
  26. Wang Y, Tong J, Qin Y, et al. Characterization of an asymptomatic cohort of SARS-COV-2 infected individuals outside of Wuhan, China, Clin Infect Dis 2020; 71:(6).
    [Google Scholar]
  27. Wu JT, Leung K, Leung GM. Nowcasting and forecasting the potential domestic and international spread of the 2019-nCoV outbreak originating in Wuhan, China: a modelling study, Lancet 2020 395:(10225):689–697.
    [Google Scholar]
  28. Tian H, Liu Y, Li Y, et al. An investigation of transmission control measures during the first 50 days of the COVID-19 epidemic in, Chin Sci 2020 368:(6941):638–642.
    [Google Scholar]
  29. Chinazzi M, Davis JT, Ajelli M, et al. The effect of travel restrictions on the spread of the 2019 novel coronavirus (COVID-19) outbreak, Science 2020 368:(6489):395–400.
    [Google Scholar]
  30. Chen N, Zhou M, Dong X, et al. Epidemiological and clinical characteristics of 99 cases of 2019 novel coronavirus pneumonia in Wuhan, China: a descriptive study, Lancet 2020 395:(10223):507–513.
    [Google Scholar]
  31. Heidari M, Sayfouri N, Nowruz DP. Aggravate Covid-19 crisis in Iran?, Disaster Med Public Health Prep 2020 14:(4):e5–e6.
    [Google Scholar]
  32. Farnoosh G, Hassanpour K, Badri T, Hosseini Zijoud SR. What are the consequences when Iran coincides with COVID-19?, Res Mol Med 2020 8:(2):49–50.
    [Google Scholar]
  33. World Health Organization. Iran (Islamic Republic of) [Internet], Geneva: WHO; 2020. Available from: https://covid19.who.int/region/emro/country/ir .
  34. Government communications office, preventative measures, Doha: Government of Qatar; 2021. Available from: https://www.gco.gov.qa/en/preventative-measures/ .
  35. Ayoub HH, Chemaitelly H, Seedat S, et al. Mathematical modeling of the SARS-CoV-2 epidemic in Qatar and its impact on the national response to COVID-19, J Glob Health 2021;11:05005.
    [Google Scholar]
  36. Quilty BJ, Clifford S, Flasche S, et al. Effectiveness of airport screening at detecting travellers infected with novel coronavirus (2019-nCoV), Euro Surveill 2020; 25:(5).
    [Google Scholar]
  37. Gostic K, Gomez AC, Mummah RO, et al. Estimated effectiveness of symptom and risk screening to prevent the spread of COVID-19, eLife 2020;9:e55570.
    [Google Scholar]
  38. Alinier G, Morris B, Abu J, et al. Implementation of a drive-through testing clinic in Qatar for residents having recently returned from a country with a COVID-19 travel warning, Qatar Med J 2020 2020:(3):42.
    [Google Scholar]
  39. Ministry of Public Health. “Etheraz” plays vital role in keeping people safe during lifting of restrictions, say health officials [Internet], Doha: MOPH; 2020. Available from: https://www.moph.gov.qa/english/mediacenter/News/Pages/NewsDetails.aspx?ItemId = 274 .
    [Google Scholar]
  40. International Airport H, International H. Airport marked a record number of passengers in 2019 with 38.78 million passengers served [Internet], Doha: HIA; 2020. Available from: https://dohahamadairport.com/media/hamad-international-airport-marked-record-number-passengers-2019-3878-million-passengers .
    [Google Scholar]
  41. Testing strategy for coronavirus (COVID-19) in high-density critical infrastructure workplaces after a COVID-19 case is identified [Internet], Atlanta: CDC; 2020. Available from: https://www.cdc.gov/coronavirus/2019-ncov/community/worker-safety-support/hd-testing.html .
  42. Lavezzo E, Franchin E, Ciavarella C, et al. Suppression of a SARS-CoV-2 outbreak in the Italian municipality of Vo’, Nature 2020 584:(7821):425–429.
    [Google Scholar]
  43. Romagnani P, Gnone G, Guzzi F, et al. The COVID-19 infection: lessons from the Italian experience, J Public Health Policy 2020 41:(3):238–244.
    [Google Scholar]
  44. Coyle PV, Chemaitelly H, Ben Hadj Kacem MA, et al. SARS-CoV-2 seroprevalence in the urban population of Qatar: an analysis of antibody testing on a sample of 112,941 individuals, iScience 2021 24:(6):102646.
    [Google Scholar]
  45. Al-Thani MH, Farag E, Bertollini R, et al. SARS-CoV-2 infection is at herd immunity in the majority segment of the population of Qatar, Open Forum Infect Dis 2021; 8:(8).
    [Google Scholar]
  46. Al-Kuwari MG, Al-Nuaimi AA, Abdulmajeed J, et al. COVID-19 infection across workplace settings in Qatar: a comparison of COVID-19 positivity rates of screened workers from March 1st to July 31st, 2020, J Occup Med Toxicol 2021; 16:(21).
    [Google Scholar]
  47. Alajmi J, Jeremijenko AM, Abraham JC, et al. COVID-19 infection among healthcare workers in a national healthcare system: the Qatar experience, Int J Infect Dis 2020;100:386–389.
    [Google Scholar]
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