Evidence map›Paper›PMID 34332082›Full record

ArticleInternational journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases2021

Association of public health interventions and COVID-19 incidence in Vietnam, January to December 2020.

Ha-Linh Quach, Khanh Cong Nguyen, Ngoc-Anh Hoang, Thai Quang Pham, Duong Nhu Tran, Mai Thi Quynh Le, Hung Thai Do, Chien Chinh Vien, Lan Trong Phan, Nghia Duy Ngu and 6 more

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Article in International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

6 citing papers in PubMed.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

16 authors.

Ha-Linh QuachDepartment of Epidemiology, National Institute of Hygiene and Epidemiology, Hanoi, Vietnam; National Centre for Epidemiology and Population Health, Research School of Population Health, College of Health and Medicine, Australian National University, Canberra, ACT, Australia.
Khanh Cong NguyenDepartment of Epidemiology, National Institute of Hygiene and Epidemiology, Hanoi, Vietnam. Electronic address: nck@nihe.org.vn.
Ngoc-Anh HoangDepartment of Epidemiology, National Institute of Hygiene and Epidemiology, Hanoi, Vietnam; National Centre for Epidemiology and Population Health, Research School of Population Health, College of Health and Medicine, Australian National University, Canberra, ACT, Australia. Electronic address: ngoc-anh.hoang@anu.edu.au.
Thai Quang PhamDepartment of Epidemiology, National Institute of Hygiene and Epidemiology, Hanoi, Vietnam; School of Preventive Medicine and Public Health, Hanoi Medical University, Hanoi, Vietnam.
Duong Nhu TranNational Institute of Hygiene and Epidemiology, Hanoi, Vietnam.
Mai Thi Quynh LeNational Institute of Hygiene and Epidemiology, Hanoi, Vietnam.
Hung Thai DoNha Trang Pasteur Institute, Nha Trang City, Khanh Hoa, Vietnam.
Chien Chinh VienTay Nguyen Institute of Hygiene and Epidemiology, Dak Lak, Vietnam.
Lan Trong PhanHo Chi Minh Pasteur Institute, Ho Chi Minh City, Vietnam.
Nghia Duy NguDepartment of Epidemiology, National Institute of Hygiene and Epidemiology, Hanoi, Vietnam.
Tu Anh TranDepartment of Epidemiology, National Institute of Hygiene and Epidemiology, Hanoi, Vietnam.
Dinh Cong PhungNational Agency for Science and Technology Information, Ministry of Science and Technology, Hanoi, Vietnam.
Quang Dai TranGeneral Department of Preventive Medicine, Ministry of Health, Hanoi, Vietnam.
Tan Quang DangGeneral Department of Preventive Medicine, Ministry of Health, Hanoi, Vietnam.
Duc-Anh DangNational Institute of Hygiene and Epidemiology, Hanoi, Vietnam.
Florian VogtNational Centre for Epidemiology and Population Health, Research School of Population Health, College of Health and Medicine, Australian National University, Canberra, ACT, Australia; The Kirby Institute, University of New South Wales, Sydney, NSW, Australia.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundVietnam implemented various public health interventions such as contact tracing and testing, mandatory quarantine, and lockdowns in response to coronavirus disease 2019 (COVID-19). However, the effects of these measures on the epidemic remain unclear.

methodsThis article describes the public health interventions in relation to COVID-19 incidence. Maximum likelihood estimations were used to assess containment delays (time between symptom onset and start of isolation) and multivariable regression was employed to identify associated factors between interventions and COVID-19 incidence. The effective reproductive numbers (Rt) were calculated based on transmission pairs.

resultsInterventions were introduced periodically in response to the epidemic. Overall, 817 (55.4%) among 1474 COVID-19 cases were imported. Based on a serial interval of 8.72 ± 5.65 days, it was estimated that Rt decreased to below 1 (lowest at 0.02, 95% CI 0-0.12) during periods of strict border control and contact tracing, and increased ahead of new clusters. The main method to detect cases shifted over time from passive notification to active case-finding at immigration or in lockdown areas, with containment delays showing significant differences between modes of case detection.

conclusionsA combination of early, strict, and consistently implemented interventions is crucial to control COVID-19. Low-middle income countries with limited capacity can contain COVID-19 successfully using non-pharmaceutical interventions.

Indexed as

COVID-19Public HealthCommunicable Disease ControlContact TracingHumansIncidenceSARS-CoV-2VietnamContact tracingContainment delayCOVID-19Public health interventionQuarantineVietnam

Identifiers

PMID34332082
PMCPMC8318669

What OpenQuestion holds

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Registered trials

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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.