AUTHOR=Talavera-Barber Maria , Flint Kaitlyn , Graber Brianna , Dhital Ravi , Kaptsan Irina , Medoro Alexandra K. , Sánchez Pablo J. , Shimamura Masako 

TITLE=Antibody Titers Against Human Cytomegalovirus gM/gN and gB Among Pregnant Women and Their Infants

JOURNAL=Frontiers in Pediatrics

VOLUME=10

YEAR=2022

URL=https://www.frontiersin.org/journals/pediatrics/articles/10.3389/fped.2022.846254

DOI=10.3389/fped.2022.846254

ISSN=2296-2360

ABSTRACT=<p>Congenital CMV (cCMV) infection can affect infants born to mothers with preconceptional seroimmunity. To prevent cCMV due to nonprimary maternal infection, vaccines eliciting responses exceeding natural immunity may be required. Anti-gM/gN antibodies have neutralizing capacity <italic>in-vitro</italic> and in animal models, but anti-gM/gN antibodies have not been characterized among seroimmune pregnant women. Paired maternal and infant cord sera from 92 CMV seropositive mothers and their full-term or preterm infants were tested for anti-gM/gN antibody titers in comparison with anti-gB titers and neutralizing activity. Anti-gM/gN titers were significantly lower than anti-gB titers for all groups and did not correlate with serum neutralizing capacity. Further study is needed to determine if higher anti-gM/gN antibody titers might enhance serum neutralizing capacity among seropositive adults.</p>