Estimating the incubation period of SARS-CoV-2 Omicron BA.1 variant in comparison with that during the Delta variant dominance in South Korea

Liu, Yanwen; Zhao, Shi; Ryu, Sukhyun; Ran, Jinjun; Fan, Jinjiang; He, Daihai

doi:10.1016/j.onehlt.2022.100425

Cited by 12 publications

(6 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Among 69 cases with an identified exposure, only 4 had a 1-day exposure window. Using more comprehensive exposure windows, the estimated mean incubation period in Taiwan was 3.5 (95% CI 3.1–4.0) days, longer than Tanaka et al’s estimates ( 1 , 2 ) but similar to estimates of 3.5 days from Italy (data collected during January 2022) ( 3 ) and South Korea (data collected during November–December 2021) ( 4 ) and estimates from a systematic review (3.6 days) ( 5 ). The estimates from Japan ( 2 ) appear to be the shortest periods reported across previously reviewed studies ( 5 ).…”

supporting

confidence: 51%

SARS-CoV-2 Incubation Period during Omicron BA.5–Dominant Period, Japan

Cheng,

Akhmetzhanov,

Dushoff

2024

Emerg. Infect. Dis.

View full text Add to dashboard Cite

supporting

confidence: 51%

SARS-CoV-2 Incubation Period during Omicron BA.5–Dominant Period, Japan

Cheng,

Akhmetzhanov,

Dushoff

2024

Emerg. Infect. Dis.

View full text Add to dashboard Cite

“…Also, the literature consistently found that when coupled with diagnostic testing, quarantines were more effective and could be shortened without a substantially increased risk of transmission. A study from Korea (not included in this review) suggested that up to 95% of symptomatic cases infected with the Omicron strain of the virus would go on to develop symptoms within six days [ 16 ], suggesting that shorter quarantine periods with appropriate testing could achieve the same level of risk reduction as lengthier quarantines.…”

Section: Discussionmentioning

confidence: 99%

Effectiveness of international border control measures during the COVID-19 pandemic: a narrative synthesis of published systematic reviews

Grépin,

Aston,

Burns

2023

Phil. Trans. R. Soc. A.

View full text Add to dashboard Cite

The effectiveness of international border control measures during the COVID-19 pandemic is not well understood. Using a narrative synthesis approach to published systematic reviews, we synthesized the evidence from both modelling and observational studies on the effects of border control measures on domestic transmission of the virus. We find that symptomatic screening measures were not particularly effective, but that diagnostic-based screening methods were more effective at identifying infected travellers. Targeted travel restrictions levied against travellers from Wuhan were likely temporarily effective but insufficient to stop the exportation of the virus to the rest of the world. Quarantine of inbound travellers was also likely effective at reducing transmission, but only with relatively long quarantine periods, and came with important economic and social effects. There is little evidence that most travel restrictions, including border closure and those implemented to stop the introduction of new variants of concern, were particularly effective. Border control measures played an important role in former elimination locations but only when coupled with strong domestic public health measures. In future outbreaks, if border control measures are to be adopted, they should be seen as part of a broader strategy that includes other non-pharmaceutical interventions. This article is part of the theme issue 'The effectiveness of non-pharmaceutical interventions on the COVID-19 pandemic: the evidence'.

show abstract

Section: Introductionmentioning

confidence: 99%

“…2,3 Although these measures were broadly effective at preventing nosocomial SARS-CoV-2 infections, specialized care settings, such as inpatient psychiatric units, continued to experience outbreaks throughout the first year of the pandemic. [4][5][6][7][8] Inpatient psychiatric treatment units, otherwise referred to as behavioral health units (BHUs), commonly have open floor layouts and employ group-oriented treatments (ie, milieu therapies), which could contribute to nosocomial outbreaks of infection. 9 Quarantine is not an option for most BHU patients due to isolation limitations 10 and promotion of socialization.…”

Section: Introductionmentioning

confidence: 99%

COVID-19 outbreak and genomic investigation in an inpatient behavioral health unit

Rios-Guzman,

Stancovici,

Simons

et al. 2024

ASHE

View full text Add to dashboard Cite

Background: Inpatient behavioral health units (BHUs) had unique challenges in implementing interventions to mitigate coronavirus disease 2019 (COVID-19) transmission, in part due to socialization in BHU settings. The objective of this study was to identify the transmission routes and the efficacy of the mitigation strategies employed during a COVID-19 outbreak in an inpatient BHU during the Omicron surge from December 2021 to January 2022. Methods: An outbreak investigation was performed after identifying 2 COVID-19-positive BHU inpatients on December 16 and 20, 2021. Mitigation measures involved weekly point prevalence testing for all inpatients, healthcare workers (HCWs), and staff, followed by infection prevention mitigation measures and molecular surveillance. Whole-genome sequencing on a subset of COVID-19-positive individuals was performed to identify the outbreak source. Finally, an outbreak control sustainability plan was formulated for future BHU outbreak resurgences. Results: We identified 35 HCWs and 8 inpatients who tested positive in the BHU between December 16, 2021, and January 17, 2022. We generated severe acute respiratory coronavirus virus 2 (SARS-CoV-2) genomes from 15 HCWs and all inpatients. Phylogenetic analyses revealed 3 distinct but genetically related clusters: (1) an HCW and inpatient outbreak likely initiated by staff, (2) an HCW and inpatient outbreak likely initiated by an inpatient visitor, and (3) an HCW-only cluster initiated by staff. Conclusions: Distinct transmission clusters are consistent with multiple, independent SARS-CoV-2 introductions with further inpatient transmission occurring in communal settings. The implemented outbreak control plan comprised of enhanced personal protective equipment requirements, limited socialization, and molecular surveillance likely minimized disruptions to patient care as a model for future pandemics.

show abstract

Estimating the incubation period of SARS-CoV-2 Omicron BA.1 variant in comparison with that during the Delta variant dominance in South Korea

Cited by 12 publications

References 23 publications

SARS-CoV-2 Incubation Period during Omicron BA.5–Dominant Period, Japan

SARS-CoV-2 Incubation Period during Omicron BA.5–Dominant Period, Japan

Effectiveness of international border control measures during the COVID-19 pandemic: a narrative synthesis of published systematic reviews

COVID-19 outbreak and genomic investigation in an inpatient behavioral health unit

Contact Info

Product

Resources

About