Scientists from the United States report that antibodies to pandemic coronavirus were detected in the placenta in some women who contracted a coronavirus infection while carrying a child.
Experts analyzed placentas obtained from 1,470 women who contracted pandemic coronavirus while carrying a child. Antibodies to SARS-CoV-2 were detected in 83 placentas.
Scientists believe that antibodies in these cases also got into the body of infants, thus providing them with protection from the virus. But it remains unclear whether the children of such mothers really received antibodies to coronavirus infection, how much and how long these antibodies persist.
Interestingly, the concentration of antibodies in the placenta correlated with the degree of infection of the woman and the moment of infection during the period of gestation. Thus, a higher amount of antibodies was found in women who became infected in the first trimester of pregnancy, and it did not matter whether they had manifestations of the disease or not.
The researchers also found that only IgG antibodies enter the placenta through the umbilical cord. It is also emphasized that none of the children born were infected with the coronavirus.