UMIN-CTR Clinical Trial

Unique ID issued by UMIN UMIN000059051
Receipt number R000067545
Scientific Title A Database Study Investigating Household Transmission Dynamics of COVID-19 and Influenza
Date of disclosure of the study information 2025/09/30
Last modified on 2025/09/10 18:48:16

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Basic information

Public title

A Database Study Investigating Household Transmission Dynamics of COVID-19 and Influenza

Acronym

A Database Study Investigating Household Transmission Dynamics of COVID-19 and Influenza

Scientific Title

A Database Study Investigating Household Transmission Dynamics of COVID-19 and Influenza

Scientific Title:Acronym

A Database Study Investigating Household Transmission Dynamics of COVID-19 and Influenza

Region

Japan


Condition

Condition

SARS-CoV-2 infection, Influenza virus infection

Classification by specialty

Infectious disease

Classification by malignancy

Others

Genomic information

NO


Objectives

Narrative objectives1

Using a health insurance claims database, this study aims to elucidate the household transmission patterns of COVID-19 and influenza both viral infectious diseases-by analyzing households with confirmed cases

Basic objectives2

Others

Basic objectives -Others

Viral transmission

Trial characteristics_1


Trial characteristics_2


Developmental phase



Assessment

Primary outcomes

Event of Household Transmission Between Day 2 and Day 8 Following the Diagnosis Date (Day 1) of COVID-19 or Influenza

Key secondary outcomes



Base

Study type

Observational


Study design

Basic design


Randomization


Randomization unit


Blinding


Control


Stratification


Dynamic allocation


Institution consideration


Blocking


Concealment



Intervention

No. of arms


Purpose of intervention


Type of intervention


Interventions/Control_1


Interventions/Control_2


Interventions/Control_3


Interventions/Control_4


Interventions/Control_5


Interventions/Control_6


Interventions/Control_7


Interventions/Control_8


Interventions/Control_9


Interventions/Control_10



Eligibility

Age-lower limit


Not applicable

Age-upper limit


Not applicable

Gender

Male and Female

Key inclusion criteria

Households in which the index patient had a diagnosis date (Day 1) for COVID-19 or influenza during the inclusion period (November 30, 2021 to August 17, 2023).

Key exclusion criteria

(1) Households in which only the index patient was present during the same month as Day 1
(2) Households in which the index patient was hospitalized on Day 1
(3) Households with two or more index patients

Target sample size

1200000


Research contact person

Name of lead principal investigator

1st name Kosaku
Middle name
Last name Komiya

Organization

Oita university

Division name

Respiratory Medicine and Infectious Diseases

Zip code

879-5593

Address

1-1 Hasamamachi Idaigaoka, Yufu-shi, Oita

TEL

097-586-5804

Email

komiyakh1@oita-u.ac.jp


Public contact

Name of contact person

1st name Shogo
Middle name
Last name Miyazawa

Organization

Shionogi & Co., Ltd.

Division name

Data Science Department

Zip code

541-0047

Address

4F, Midosuji MTR Building, 6-3, Awajimachi 3-chome, Chuo-ku, Osaka-shi, Osaka

TEL

090-3056-6073

Homepage URL


Email

shogo.miyazawa@shionogi.co.jp


Sponsor or person

Institute

Shionogi & Co., Ltd.

Institute

Department

Personal name



Funding Source

Organization

Shionogi & Co., Ltd.

Organization

Division

Category of Funding Organization

Profit organization

Nationality of Funding Organization



Other related organizations

Co-sponsor


Name of secondary funder(s)



IRB Contact (For public release)

Organization

NA

Address

NA

Tel

0000000000

Email

XX@XX


Secondary IDs

Secondary IDs

NO

Study ID_1


Org. issuing International ID_1


Study ID_2


Org. issuing International ID_2


IND to MHLW



Institutions

Institutions



Other administrative information

Date of disclosure of the study information

2025 Year 09 Month 30 Day


Related information

URL releasing protocol


Publication of results

Unpublished


Result

URL related to results and publications


Number of participants that the trial has enrolled


Results


Results date posted


Results Delayed


Results Delay Reason


Date of the first journal publication of results


Baseline Characteristics


Participant flow


Adverse events


Outcome measures


Plan to share IPD


IPD sharing Plan description



Progress

Recruitment status

Preinitiation

Date of protocol fixation

2024 Year 09 Month 05 Day

Date of IRB


Anticipated trial start date

2045 Year 12 Month 31 Day

Last follow-up date

2045 Year 12 Month 31 Day

Date of closure to data entry


Date trial data considered complete


Date analysis concluded



Other

Other related information

Database study


Management information

Registered date

2025 Year 09 Month 10 Day

Last modified on

2025 Year 09 Month 10 Day



Link to view the page

Value
https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000067545