Here the authors test 1405 remnant cord blood samples and find SARS-CoV-2 specific fetal IgA and/or IgM antibodies in 28.7% of samples, showing in utero exposure to SARS-CoV-2. The prevalence of fetal IgA/IgM varies with SARS-CoV-2 variant.
- Olivier Pernet
- Toinette Frederick
- Andrea Kovacs