Information for Participants

Thank you for agreeing to participate in this important add-on study that will contribute vital information to the global fight against COVID-19.

This study will collect information from you in three ways:

  • Quarterly surveys
  • Bi-weekly symptom surveys
  • Sample collection

Details about how to provide each form of information, including instructional videos for sample collection, follow below.

Please note: Do not miss the important step, for sample collection, of recording your sample information online.

  • For each participant, there are four questionnaires to complete through the course of the study: an initial baseline questionnaire and three follow-up questionnaires sent three months apart.
  • In addition to their own personal survey, parents will also complete a parental survey for each child in the household participating in the study, and each child will also complete his or her own shorter questionnaire (with a parent’s assistance, if needed).
  • Each questionnaire should be completed in a single sitting and should take no more than 10 minutes to complete.
  • Please complete your initial baseline questionnaire(s) as soon as you are able after receiving your unique questionnaire link(s) by email .
  • Every two weeks, one representative from the household will receive a text or email with three short questions that can be answered “yes,” “no,” or “don’t know” about COVID-19 testing and symptoms.
  • If the household representative answers “yes” or “don’t know” to any of these screening questions, each member of the household will be asked additional questions to help us better understand your COVID-19 experience.
  • Please carefully read the instruction booklet(s) found in the sample collection kit(s) mailed to your home.
  • To supplement those instructions, we offer a number of instructional videos below.

Video: how to…

Blood samples are collected in two ways: on the tips of a Mitra cartridge and on a blood spot card. A single finger prick should give enough blood for both types of collection. If not, a second lancet is provided for a second finger prick.

Preparing and pricking the finger with a lancet

First video: pricking a child’s finger.

Additional resource: Top 5 tips for collecting blood with a finger prick in kids

Second video: pricking your own finger

First video: how to use the cartridge (Mitra device).

Please note: the cartridge in your sample collection kit will not look exactly like the one in the video. Yours will look like this (the Mitra Clamshell), but is to be used as shown in the video.

Second video: do’s and don’ts when using the cartridge (Mitra device)

Please note: the cartridge in your sample collection kit will not look exactly like the one in the video. Yours will look like this (the Mitra Clamshell), but is to be used as shown in the video.

Video: how to collect blood on the blood spot card

  • Once you have collected your samples, register the required information online via this link

Information to follow

Questions or concerns?

If anything in these instructions are unclear to you, or if you have additional questions or concerns about your participation in CHILD’s COVID-19 add-on study, please contact the Research Coordinator for your study site:

Linda Warner
Joyce Chikuma
Scarlet Salas
Yaminee Charavanapavan

COVID-19 Add-on Study Overview

Watch the video below for a general overview of the COVID-19 add-on study and what you can expect as a participant.

Stay Tuned

Dear CHILD families participating in the COVID-19 add-on study:

Soon this page will provide a link to the CHILD COVID-19 add-on study online survey, as well as instructional videos on how to collect biological samples for the study. 

Thank you for your commitment to this important research!


Padmaja (PJ) Subbarao 
CHILD Study Director