ArticleThe Lancet regional health. Western Pacific2021
Complementation of contact tracing by mass testing for successful containment of beta COVID-19 variant (SARS-CoV-2 VOC B.1.351) epidemic in Hong Kong.
Article in The Lancet regional health. Western Pacific, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.
What it found
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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.
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Who cites it
19 citing papers in PubMed, 1 synthesis or guideline pooled it, 26 citations in OpenAlex.
- Household Secondary Attack Rates of SARS-CoV-2 by Variant and Vaccination Status: An Updated Systematic Review and Meta-analysis.JAMA network open · 2022Pooled it
- Contact tracing strategies for infectious diseases: A systematic literature review.PLOS global public health · 2025Article
- Early COVID-19 Pandemic Preparedness: Informing Public Health Interventions and Hospital Capacity Planning Through Participatory Hybrid Simulation Modeling.International journal of environmental research and public health · 2024Article
- Effects of public-health measures for zeroing out different SARS-CoV-2 variants.Nature communications · 2023Article
- Population-Based Severe Acute Respiratory Syndrome Coronavirus 2 Whole-Genome Sequencing and Contact Tracing During the Coronavirus Disease 2019 Pandemic in Switzerland.The Journal of infectious diseases · 2023Article
- Web Resources for SARS-CoV-2 Genomic Database, Annotation, Analysis and Variant Tracking.Viruses · 2023Review
- Association Between Population-Level Factors and Household Secondary Attack Rate of SARS-CoV-2: A Systematic Review and Meta-analysis.Open forum infectious diseases · 2023Article
- Development and Validation of a Novel COVID-19 nsp8 One-Tube RT-LAMP-CRISPR Assay for SARS-CoV-2 Diagnosis.Microbiology spectrum · 2022Article
- Evolution and Control of COVID-19 Epidemic in Hong Kong.Viruses · 2022Review
- Explosive outbreak of SARS-CoV-2 Omicron variant is associated with vertical transmission in high-rise residential buildings in Hong Kong.Building and environment · 2022Article
- Targeted mass testing and phylogenetic analysis is effective for preventing community transmission of SARS-CoV-2 beta variant.The Lancet regional health. Western Pacific · 2022Article
- Decreased Antibiotic Consumption Coincided with Reduction in Bacteremia Caused by Bacterial Species with Respiratory Transmission Potential during the COVID-19 Pandemic.Antibiotics (Basel, Switzerland) · 2022Article
- Boosting SARS-CoV-2 detection combining pooling and multiplex strategies.Scientific reports · 2022Article
- Outbreak investigation of airborne transmission of Omicron (B.1.1.529) - SARS-CoV-2 variant of concern in a restaurant: Implication for enhancement of indoor air dilution.Journal of hazardous materials · 2022Article
- VALCOR: a protocol for the validation of SARS-corona virus-2 assays.Archives of public health = Archives belges de sante publique · 2022Article
- High compliance to infection control measures prevented guest-to-staff transmission in COVID-19 quarantine hotels.The Journal of infection · 2022Article
- Household secondary attack rates of SARS-CoV-2 by variant and vaccination status: an updated systematic review and meta-analysis.medRxiv : the preprint server for health sciences · 2022Article
- Understanding spatiotemporal symptom onset risk of Omicron BA.1, BA.2 and hamster-related Delta AY.127.Frontiers in public health · 2022Article
- Transmission of Omicron (B.1.1.529) - SARS-CoV-2 Variant of Concern in a designated quarantine hotel for travelers: a challenge of elimination strategy of COVID-19.The Lancet regional health. Western Pacific · 2022Article
Corrections and comments
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Authors and funding
22 authors at 7 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundGlobal dissemination of SARS-CoV-2 Variants of Concern (VOCs) remains a concern. The aim of this study is to describe how mass testing and phylogenetic analysis successfully prevented local transmission of SARS-CoV-2 VOC in a densely populated city with low herd immunity for COVID-19.
methodsIn this descriptive study, we conducted contact tracing, quarantine, and mass testing of the potentially exposed contacts with the index case. Epidemiological investigation and phylogeographic analysis were performed.
findingsAmong 11,818 laboratory confirmed cases of COVID-19 diagnosed till 13
interpretationThe rising epidemic of SARS-CoV-2 VOC transmission could be successfully controlled by contact tracing, quarantine, and rapid genome sequencing complemented by mass testing.
fundingHealth and Medical Research Fund Commissioned Research on Control of Infectious Disease (see acknowledgments for full list).
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Registered trials
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.