The Effects of Tea Catechin Extracts Containing Mask on the Prevention of Influenza Infection
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 180
- 试验地点
- 3
- 主要终点
- the incidence rate of influenza infection during the study
研究概览
简要总结
The purpose of this study is to evaluate the effects of catechin extracts containing mask on prevention of influenza infection.
详细描述
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.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Prevention
- 盲法
- None
入排标准
- 年龄范围
- 20 Years 至 85 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Possible to wearing mask for three months
- •Possible to fill out a questionnaire personally
- •Obtained written informed consent before participation
排除标准
- •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
结局指标
主要结局
the incidence rate of influenza infection during the study
时间窗: assessed at each month
次要结局
- the incidence rates of upper respiratory tract infections(assessed at each month)
- the severity of the symptoms and the duration of the cold among incident cases(assessed at each month)
- he incidence-free time for influenza or upper respiratory tract infections after the intervention(assessed at each month)