Evidence map›Paper›PMID 33622475›Full record

ArticleEmerging infectious diseases2021

Familial Clusters of Coronavirus Disease in 10 Prefectures, Japan, February-May 2020.

Reiko Miyahara, Naho Tsuchiya, Ikkoh Yasuda, Yura K Ko, Yuki Furuse, Eiichiro Sando, Shohei Nagata, Tadatsugu Imamura, Mayuko Saito, Konosuke Morimoto and 5 more

Abstract read
In one paragraph

Article in Emerging infectious diseases, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 6 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 6 pooled it
–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

20 citing papers in PubMed, 6 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. The role of children in household transmission of COVID-19: a systematic review and meta-analysis.International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases · 2022
    Pooled it
  4. Pooled it
  5. Asymptomatic SARS-CoV-2 infection: A systematic review and meta-analysis.Proceedings of the National Academy of Sciences of the United States of America · 2021
    Pooled it
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  15. The association of opening K-12 schools with the spread of COVID-19 in the United States: County-level panel data analysis.Proceedings of the National Academy of Sciences of the United States of America · 2021
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  18. Increased Transmissibility of the SARS-CoV-2 Alpha Variant in a Japanese Population.International journal of environmental research and public health · 2021
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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

15 authors.

Reiko Miyahara
Naho Tsuchiya
Ikkoh Yasuda
Yura K Ko
Yuki Furuse
Eiichiro Sando
Shohei Nagata
Tadatsugu Imamura
Mayuko Saito
Konosuke Morimoto
Takeaki Imamura
Yugo Shobugawa
Hiroshi Nishiura
Motoi Suzuki
Hitoshi Oshitani

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The overall coronavirus disease secondary attack rate (SAR) in family members was 19.0% in 10 prefectures of Japan during February 22-May 31, 2020. The SAR was lower for primary cases diagnosed early, within 2 days after symptom onset. The SAR of asymptomatic primary cases was 11.8%.

Indexed as

FamilyAsymptomatic InfectionsContact TracingCOVID-19FemaleHumansIncidenceJapanMaleSARS-CoV-2Time Factorscoronavirus diseaseCOVID-19familial clustersJapanprefecturesrespiratory infectionsSARS-CoV-2severe acute respiratory syndrome coronavirus 2viruses

Identifiers

PMID33622475
PMCPMC7920650

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.