Early Release - Antibody Profiles According to Mild or Severe SARS-CoV-2 Infection, Atlanta, Georgia, USA, 2020 - Volume 26, Number 12—December 2020 - Emerging Infectious Diseases journal - CDC
▻https://wwwnc.cdc.gov/eid/article/26/12/20-3334_article
Among patients with coronavirus disease (#COVID-19), IgM levels increased early after symptom onset for those with mild and severe disease, but IgG levels increased early only in those with severe disease. A similar pattern was observed in a separate serosurveillance cohort. Mild COVID-19 should be investigated separately from severe COVID-19.