A US government study released Tuesday has suggested that COVID-19 vaccines during pregnancy could protect babies after they are born, leading to fewer hospitalised infants. This study is the first to show potential benefits to infants born to people who received two doses of the Pfizer or Moderna jabs during pregnancy.
The Centres for Disease Control and Prevention researchers said during a briefing that it was already known that antibodies developed by the vaccine transfer to the foetus through the umbilical cord. How that might affect infants after birth was uncertain.
Dr. Dana Meaney-Delman, an obstetrician and CDC researcher, said that until this study, ‘we have not yet had data to demonstrate whether these antibodies might provide protection for the baby against COVID-19.’ During surges of Delta and Omicron, infants in the study were treated at 20 hospitals in 17 states between July 2021 and mid January. Researchers did not examine infection rates in infants.
They instead looked at data on 176 children under 6 months who were hospitalised with COVID-19 and 203 in the hospital for some other condition. The vaccination status of all the babies’ mothers were also taken into account. Vaccination rates were much lower among mothers of the COVID-19 infants than among those whose infants were hospitalised with some other disease – 16% compared with 32%. The researchers said that the results offer yet another reason for pregnant people to get vaccinated.
Around two-thirds of pregnant people in the US are fully vaccinated, with most getting the shot before pregnancy. Other shots such as for flu and whooping cough given in pregnancy are known to protect mothers and infants.
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