CD40LG and cytomegalovirus infection: All infants who had a positive CMV-specific IgM response and all with positive CMV-specific IFN-\documentclass[12pt]{minimal}\usepackage{amsmath}\usepackage{wasysym}\usepackage{amsfonts}\usepackage{amssymb}\usepackage{amsbsy}\usepackage{mathrsfs}\usepackage{upgreek}\setlength{\oddsidemargin}{-69pt}\begin{document}$$\gamma$$\end{document}γ responses, except one infant who maintained 85% rather than 90% of their Day −7 CMV-IgG response on Day 28, had a positive CMV-specific IgG response, indicating that measuring IgG is more sensitive in detection of CMV infection (Fig. 3c).