Effectiveness of SARS-CoV-2 vaccines in Japan

Effectiveness of SARS-CoV-2 vaccines in Japan - Effectiveness of SARS-CoV-2 vaccines in Japan

Status

Recruiting

Phases

Unknown

Study type

Observational

Source

JPRN

Registry ID

JPRN-UMIN000044872

Enrollment

10000

Registered

2021-07-19

Start date

2021-07-01

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

COVID-19

Interventions

None listed

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1. Patients who had signs/symptoms consistent with COVID-19 and tested SARS-CoV-2 2. Asymptomatic patients who tested SARS-CoV-2

Exclusion criteria

Exclusion criteria: 1. Patients who refused to participate through opt-out

Design outcomes

Primary

Measure	Time frame
1. To evaluate the effectiveness of SARS-CoV-2 vaccines in Japan	—

Secondary

Measure	Time frame
2. To evaluate the effectiveness of SRAS-CoV-2 vaccines stratified by age, sex, or comorbidities 3. To evaluate the effectiveness of SRAS-CoV-2 vaccines against asymptomatic patients	—

Countries

Japan

Contacts

Public ContactHaruka Maeda

Institute of Tropical Medicine, Nagasaki University Department of Respiratory Infections

mharuka@nagasaki-u.ac.jp095-819-7842

Outcome results