Catechin Containing Mask for the Prevention of Influenza Infection

The Effects of Tea Catechin Extracts Containing Mask on the Prevention of Influenza Infection

The purpose of this study is to evaluate the effects of catechin extracts containing mask on prevention of influenza infection.

Catechins are the major components of tea flavonoids and are reported to possess physiological activities such as antiviral effects. Recent in-vitro experimental studies have revealed that tea catechin extracts possess the effects on the prevention of influenza infection. However, a limited number of studies have been conducted on the clinical effects. Based on these backgrounds, we designed a prospective randomized controlled study to evaluate the effects of tea catechin extracts containing mask on the prevention of influenza infection.

Inclusion Criteria:

• Possible to wearing mask for three months
• Possible to fill out a questionnaire personally
• Obtained written informed consent before participation

Exclusion Criteria:

• Possessing some infectious diseases in need of therapy
• Possessing tea or catechin allergy
• diagnosed as inadequate for other reasons to participate the study by principal investigator