Successful containment of a flight-imported COVID-19 outbreak through extensive contact tracing, systematic testing and mandatory quarantine: Lessons from Vietnam

Quach, Ha-Linh; Hoang, Ngoc-Anh; Khanh, Nguyễn Công; Thai, Pham Quang; Phung, Cong Dinh; Tran, Nhu Duong; Le, Quynh Mai; Ngu, Duy Nghia; Tran, Anh Tu; La, Ngoc Quang; Tran, Dai Q.; Tai, Nguyen Trong; Vogt, Florian; Dang, Duc Anh

doi:10.1016/j.tmaid.2021.102084

Cited by 10 publications

(21 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We retrieved a total of 1638 studies. After duplicate removal and title abstract selection, 130 full texts were assessed, and 17 of them were included in the narrative synthesis [25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41] (Figure 1).…”

Section: Overviewmentioning

confidence: 99%

COVID-19 Contact Tracing Strategies During the First Wave of the Pandemic: Systematic Review of Published Studies

Amicosante¹,

Rosso²,

Bernardini³

et al. 2023

JMIR Public Health Surveill

View full text Add to dashboard Cite

Background Contact tracing (CT) represented one of the core activities for the prevention and control of COVID-19 in the early phase of the pandemic. Several guidance documents were developed by international public health agencies and national authorities on the organization of COVID-19 CT activities. While most research on CT focused on the use digital tools or relied on modelling techniques to estimate the efficacy of interventions, poor evidence is available on the real-world implementation of CT strategies and on the organizational models adopted during the initial phase of the emergency to set up CT activities. Objective We aimed to provide a comprehensive picture of the organizational aspects of CT activities during the first wave of the pandemic through the systematic identification and description of CT strategies used in different settings during the period from March to June 2020. Methods A systematic review of published studies describing organizational models of COVID-19 CT strategies developed in real-world settings was conducted in accordance with the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) statement. PubMed, Embase, and Cochrane Library were searched. Studies not providing a description of the organizational aspects of CT strategies and studies reporting or modelling theoretical strategies or focusing on the description of digital technologies’ properties were excluded. Quality of reporting was assessed by using the Template for Intervention Description and Replication Checklist for Population Health and Policy. We developed a narrative synthesis, using a conceptual framework to map the extracted studies broken down by target population. Results We retrieved a total of 1638 studies, of which 17 were included in the narrative synthesis; 7 studies targeted the general population and 10 studies described CT activities carried out in specific population subgroups. Our review identified some common elements across studies used to develop CT activities, including decentralization of CT activities, involvement of trained nonpublic health resources (eg, university students or civil servants), use of informatics tools for CT management, interagency collaboration, and community engagement. CT strategies implemented in the workplace envisaged a strong collaboration with occupational health services. Outreach activities were shown to increase CT efficiency in susceptible groups, such as people experiencing homelessness. Data on the effectiveness of CT strategies are scarce, with only few studies reporting on key performance indicators. Conclusions Despite the lack of systematically collected data on CT effectiveness, our findings can provide some indication for the future planning and development of CT strategies for infectious disease control, mainly in terms of coordination mechanisms and the use of human and technical resources needed for the rapid development of CT activities. Further research on the organizational models of CT strategies during the COVID-19 pandemic would be required to contribute to a more robust evidence-making process.

show abstract

Section: Overviewmentioning

confidence: 99%

COVID-19 Contact Tracing Strategies During the First Wave of the Pandemic: Systematic Review of Published Studies

Amicosante¹,

Rosso²,

Bernardini³

et al. 2023

JMIR Public Health Surveill

View full text Add to dashboard Cite

show abstract

“…The study does not provide a specific effect measure for an air travel-related control measure Nussbaumer-Streit 2020 (53) The study does not provide a specific effect measure for an air travel-related control measure Pham 2021 (54) The study does not assess the impact of an air travel-related control measure Quach 2021 (55) The study does not measure the specified interventions Quilty 2020 (56) The study does not assess the impact of an air travel-related control measure Ramadan 2021 (57) The study did not incorporate the specified study design Reddy 2021 (58) The study does not assess the impact of an air travel-related control measure Smith 2021 (59) The study does not measure the specified interventions Song 2021 (60) The study does not assess the impact of an air travel-related control measure Thai 2021 (61) The study does not assess the impact of an air travel-related control measure University of British Columbia 2020 (62) Unable to access results…”

Section: Table 5 Characteristics Of Excluded Studies [Ordered By Stud...mentioning

confidence: 99%

International Travel-Related Control Measures to contain The Covid-19 Pandemic: An update to a Cochrane Rapid Review

Hohlfeld¹,

Abdullahi

Abou‐Setta

et al. 2022

Preprint

View full text Add to dashboard Cite

Background: COVID-19 has proven to be more difficult to manage for many reasons including its high infectivity rate. One of the potential ways to limit its spread is by controlling free international travel. The objective of this systematic review is to identify, critically-appraise and summarize evidence on international travel-related control measures. Methods: This review is based on the Cochrane review: International travel-related control measures to contain the COVID-19 pandemic and followed the same methods. In brief, we searched for clinical and modelling studies in general health and COVID-19-specific bibliographic databases. The primary outcome categories were (i) cases avoided, (ii) a shift in epidemic development and, (iii) cases detected. Secondary outcomes were other infectious disease transmission outcomes, healthcare utilisation, resource requirements and adverse effects if identified in studies assessing at least one primary outcome. Results: We assessed 66 full-text articles that met with our inclusion criteria. Seventeen new studies (modelling = 9, observational = 8) were identified in the updated search. Most studies were of critical to moderate risk of bias. The added studies did not change the main conclusions of the Cochrane review nor the quality of the evidence (very low to low certainty). However, it did add to the evidence base for most outcomes. Conclusions: Weak evidence supports the use of international travel-related control measures to limit the spread of COVID-19 via air travel. Real-world studies are required to support these conclusions.

show abstract

“…Some of them repatriated tourists from regions with high COVID-19 prevalence and even totally closed the border [ 12 , 13 ], whereas there were other tourism-dependent nations that preferred more moderate measures, including screening (e.g. testing for the reverse transcription polymerase chain reaction (RT-PCR) or antibodies) and quarantining travelers upon their arrival [ 14 , 15 ]. Throughout numerous waves of COVID-19 transmissions, such border controls were dynamically updated by either being tightening or easing according to the real-time epidemic situation.…”

Section: Introductionmentioning

confidence: 99%

Global border restrictions in 2020–2021: Adherence and the effectiveness in long-term COVID-19 epidemic control

Yang

Wang

et al. 2023

Travel Medicine and Infectious Disease

View full text Add to dashboard Cite

Successful containment of a flight-imported COVID-19 outbreak through extensive contact tracing, systematic testing and mandatory quarantine: Lessons from Vietnam

Cited by 10 publications

References 31 publications

COVID-19 Contact Tracing Strategies During the First Wave of the Pandemic: Systematic Review of Published Studies

COVID-19 Contact Tracing Strategies During the First Wave of the Pandemic: Systematic Review of Published Studies

International Travel-Related Control Measures to contain The Covid-19 Pandemic: An update to a Cochrane Rapid Review

Global border restrictions in 2020–2021: Adherence and the effectiveness in long-term COVID-19 epidemic control

Contact Info

Product

Resources

About