- •Severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) virions were identified by transmission electron microscopy in placental tissue.
- •Mother, neonate and placental tissue tested positive for SARS-CoV-2 using molecular testing.
- •This study provided ultrastructural evidence in support of molecular evidence for vertical transmission.
Conflict of interest statement
- The immunological role of the placenta in SARS-CoV-2 infection – viral transmission, immune regulation, and lactoferrin activity.Int J Mol Sci. 2021; 22: 5799
- Difficulties in differentiating coronaviruses from subcellular structures in human tissues by electron microscopy.Emerg Infect Dis. 2021; 27: 1023-1031
- Electron microscopy of SARS-CoV-2: a challenging task.Lancet. 2020; 395: E99
- Placental pathology of COVID-19 with and without fetal and neonatal infection: trophoblast necrosis and chronic histiocytic intervillositis as risk factors for transplacental transmission of SARS-CoV-2.Viruses. 2020; 12: 1308
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