COVAR study
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COVAR study
(For internal use)

COVID-19 VAccine Research: A community-based longitudinal observational cohort study on the immunogenicity and duration of vaccine-induced immune responses to different COVID-19 vaccines
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  • Where is this questionnaire administered?
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  • The registrant is referred as participant from other studies from our research team: [Select all that apply]
  • EPI-HK study
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Introduction
The research team at the HKU School of Public Health have been at the forefront of research into COVID-19. The HKU team are part of a large consortium of international experts to answer this question in different parts of the world. One of the urgent questions to be answered is "how long will the immunity last after COVID-19 vaccination?"
We sincerely invite Hong Kong citizens to join a large-scale community-based cohort study on Coronavirus Disease 2019 (COVID-19) vaccines. To understand how immunity against COVID-19 changes over time after COVID-19 vaccination or infection by SARS-CoV-2 (the coronavirus causing COVID-19), we will regularly monitor the health conditions of the participants including routine questionnaires, blood draws and respiratory sample collection, and we will collect additional respiratory sample when participants report acute respiratory symptoms (click here for a brief introduction of the study). To show our appreciation of the participant's support to the study, we will provide supermarket coupons, and occasionally send you the results of your laboratory testing or the study findings of the cohort as a whole. For more details please refer to the Participant Information Sheet or contact us directly.
How do I join the study?
Please answer a few simple questions below and provide your contact information to allow us to check whether you are eligible to join the study. We will then contact you to provide detailed information about the study and arrange to obtain your informed consent to participate in the study.
Confidentiality of Personal Information
We will ensure the privacy of your personal data is protected in accordance with the personal data confidentiality statement as described in the Participant Information Sheet of our study, including your contact details, personal information, or any results of laboratory testing. For more details, please click here.
Contact the study team
COVAR study
School of Public Health, The University of Hong Kong
Telephone / WhatsApp / WeChat ID: +852 9848 3299 or +852 9130 4428
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Office hours: Monday to Friday, 10am to 5pm (except public holidays)
  • Do you have a few minutes to answer the questions below and provide your contact information to allow us to assess your eligibility?
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  • Why are you unwilling? [Select all that apply]
  • Other reason, please specify:
  • What is your sex?
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  • [Optional] Age in years (provided by registrants)
  • What is your date of birth?
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  • Have you received any COVID-19 vaccine already?
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  • [obsolete] Which type of COVID-19 vaccine was it?
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  • [obsolete] Other COVID-19 vaccine, please specify:
First dose of COVID-19 vaccination received:
  • Which type of 1st dose of COVID-19 vaccine was it?
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  • When did you receive the first dose of COVID-19 vaccination?
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  • Where did you receive the vaccination?
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  • Other location, please specify:
Second dose of COVID-19 vaccination received:
  • Which type of 2nd dose of COVID-19 vaccine was it?
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  • When did you receive the second dose of COVID-19 vaccination?
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  • Where did you receive the vaccination?
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Third dose of COVID-19 vaccination received:
  • Which type of 3rd dose of COVID-19 vaccine was it?
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  • When did you receive the third dose of COVID-19 vaccination?
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  • Where did you receive the vaccination?
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  • Have you already made the appointment to receive the first dose of COVID-19 vaccination?
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  • When is your appointment date for the first dose of COVID-19 vaccination?
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  • Have you already made the appointment to receive the second dose of COVID-19 vaccination?
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  • When is your appointment date for the second dose of COVID-19 vaccination?
/ / (yyyy/mm/dd)
  • Have you already made the appointment to receive the third dose of COVID-19 vaccination?
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  • When is your appointment date for the third dose of COVID-19 vaccination?
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  • Are you willing to provide blood samples (if applicable) before receiving each dose of vaccination, as well as at least one month and one year afterwards?
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  • Do you or your caregiver have a mobile or landline phone which we can call?
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  • What is the district Council district of your current residence?
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  • Have you ever stayed in any of the (Hong Kong) government's quarantine centres for quarantine?

    E.g.: Fo Tan Chun Yeung Estate, Mei Foo Jao Tsung-I Academy Heritage Lodge, Pat Heung JPC Permanent Activity Centre and Integrated Youth Training Camp, Chai Wan Lei Yue Mun Park and Holiday Village, Sai Kung Lady MacLehose Holiday Village, Pak Tam Chung Holiday Camp, Penny's Bay Quarantine Centre, etc.
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  • Do you have any family members who are also interested in this study?
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  • How did you hear about this study?[Select all that apply]
  • Name of the study, please specify:
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  • Could our research team contact you in the future for the potential to join other studies?
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Please provide the following information for the study team to contact you later:
  • Last name
  • First name
  • Title
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  • Telephone/ WhatsApp
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  • [Optional] E-mail
  • [Optional] WeChat ID
  • Via which of the above means would you prefer us to contact you? [Select all that apply]
  • Meanwhile, before the first study visit, we may invite you to complete a questionnaire to record some basic information about you, which takes about 15 minutes. If yes, which of the below method would you prefer to complete the questionnaire? [Select all that apply]
  • Please select your preferred choice of language during your participation in the study:
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  • If you have any comments or questions about this study, please leave a message here:
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