Researchers at the University of Miami reported what they believe are the first 2 confirmed cases in which the SARS-CoV-2 virus crossed a mother's placenta and caused brain damage in the infants they were carrying.
Doctors previously had suspected this was possible, but until now, there was no direct evidence of COVID-19 in a mother's placenta or an infant's brain, the team told reporters at a news briefing.
"This is the first time that we've been able to demonstrate the virus in a fetal organ with transplacental passage," Dr. Michael Paidas, chairman of obstetrics and gynecology at the University of Miami, told the briefing. "That's why we think this is so important." Neither of the infants tested positive for the SARS-CoV-2 virus, but they did have high levels of COVID antibodies in their blood, Dr. Merline Benny, a neonatologist and assistant professor of pediatrics at the University of Miami, told the briefing. She said that suggests the virus crossed from the mother, through the placenta and to the baby.
Dr. Shahnaz Duara, an obstetrician and gynecologist at the University of Miami, said she believed the cases were rare, but urged women who had been infected during their pregnancies to inform their children's pediatricians to check for developmental delays.
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