Effects of catechin-penetration masks on influenza infection prevention: A pilot study

Effects of catechin-penetration masks on influenza infection prevention: A pilot study - Effects of catechin-penetration masks on influenza infection prevention

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000020173

Enrollment

250

Registered

2015-12-14

Start date

2015-12-15

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

Influenza

Interventions

Catechin mask / 60 days Non-catechin mask / 60 days

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1) Written informed consent obtained before participation 2) Aged 20 years old or older 3) Opportunity to interact with influenza infected subjects 4) Willing and able to wear masks during the study period 5) Willing and able to fill out queationnaires

Exclusion criteria

Exclusion criteria: 1) Green tea allergy 2) Allergy to mask material 3) Severe immune disease 4) Chronic systemic infectious disease 5) History of influenza infection within the previous 6 months and influenza infection within 24 h after participation 6) Subjects diagnosed by a physician inappropriate to participate in the study

Design outcomes

Primary

Measure	Time frame
Incidence rate of influenza infection	—

Secondary

Measure	Time frame
1) Days before influenza infection 2) Incidence rate of upper respiratory tract infections 3) Mask-wearing rate	—

Countries

Japan

Contacts

Public ContactHiroshi Yamada

University of Shizuoka School of Pharmaceutical Sciences

hyamada@u-shizuoka-ken.ac.jp+81-54-264-5762

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026