About the study


這是一項匿名的定期問卷調查。每戶被邀請的住戶只限一位成員參與。參加者須年滿18歲及通常居住於香港。同意參加者需於登記參與研究時填答一份基線問卷,大約需時 15 分鐘,當中會詢問有關參加者的:(A) 社會人口特徵、(B) 新型冠狀病毒的感染史、接觸史及過往檢測經驗、(C) 過去一個月於不同類別的接觸環境下(如居所、工作場所/學校、日常活動、社交場合及醫療服務場地)的活動概況及 (D) 2019冠狀病毒病疫苗接種史。於完成基線問卷接下來的 24/36 個月,參加者會被邀請每月填答一份大約需時5分鐘完成的簡便更新問卷。參加者需要根據過去一個月的情況更新 (B) 及 (C) 部分的資料。我們每月將通過電子郵件發送提示信息。根據疫情及社交距離限制措施的變化,我們將有機會邀請參加者於額外的時間點填寫更新問卷。


About the study

Exposure setting has played a critical role in the pattern of virus transmission in the Coronavirus Diseases 2019 (COVID-19) pandemic. This study aims to investigate the population risks of exposure to SARS-CoV-2 and other respiratory pathogens in different exposure settings in Hong Kong. The study results would be important for informing public health policy development to achieve effective control of epidemics.

This is an anonymous study involving regular surveys. Participation is limited to ONE person from each invited household, who is aged 18 or above and is normally living in Hong Kong. Consented participants are invited to answer a baseline survey at study enrolment which can be completed in 15 minutes. In the baseline questionnaire, the following will be enquired: (A) socio-demographics, (B) history of SARS-CoV-2 infection, exposure, and testing, (C) activities in the past 1 month related to SARS-CoV-2 exposure in different settings (household, workplace/school, daily activity, social and healthcare setting) and (D) history of COVID-19 vaccination. In the ensuing 24/36 months after the completion of the baseline questionnaire, participants are invited to complete monthly updates, which are simpler questionnaires which can be completed in about 5 minutes. Participants will be asked to update information in section (B) and (C) based on their activities in the past 1 month. Monthly reminder will be sent through email. Depending on the changes in epidemic level and social distancing regulation, additional updates might be requested at selected time-points.

Participation in this study does not subject the respondents to any foreseeable psychological, physiological, social, legal or commercial risks or benefits. Participation in this study is completely voluntary. You may quit this study whenever you wish. All data collected in this study will be kept strictly confidential and reported only in aggregate form for publicity and publication in academic journals.

Stanley Ho Centre for Emerging Infectious Diseases,
The Chinese University of Hong Kong

Office hours: 9:00am - 1:00pm / 2:00pm – 5:30pm (Closed on Saturday and public holiday)
Phone: 2252-8862
E-mail: info@ecss2.net
WhatsApp/Signal: 9244-8827