Study did not begin

This is a prospective, observational study with a primary objective of determining the incidence of non-severe and severe COVID-19, including MIS-C, among eligible children who are diagnosed with COVID-19 and consent (or assent) to collection of data on risk factors using a unique direct-to-participant, direct-to-family, and direct-to-community approach. Secondary and exploratory objectives include risk factors of severe disease and quality of life (QoL).

Inclusion Criteria:

• Participant is ≤ 21 years of age at time of enrollment

• Participant or their parent/guardian has downloaded the "ABC Science" App from the App store as a part of the ABC Science Collaborative (Pro00107785) and has agreed to the App's Terms of Use

• Participant has a positive COVID-19 diagnosis, defined as one or more of the following:

  1. A positive COVID-19 test; or
  2. Clinical diagnosis of COVID-19 based on symptoms, as documented by a medical provider, in the absence of a positive influenza test; or
  3. Retrograde diagnosis based on presence of COVID-19 antibodies

Exclusion Criteria:

• N/A

Participants ≤ 21 years of age who have a COVID-19 diagnosis.