New study checks if CMV drug reaches fetus in second trimester

This study looked at how the drug letermovir passes from a pregnant woman to her fetus during the second trimester. Seven women who were already scheduled to end their pregnancy for other reasons took part. The goal was to measure drug levels in fetal blood and amniotic fluid to see if they are high enough to fight cytomegalovirus (CMV). This is a first step toward possibly using letermovir to treat CMV infection during pregnancy.