1 University of California School of Medicine, Davis, CA 95616
In 1973, Blankenship and I reported on an apparently healthy infant who was infected by the Epstein-Barr virus (EBV) in utero.1 In testing for EBV capsid (VCA) antibody in this infant, we found weak positive reactions with undiluted sera but negative reactions with sera diluted at 1/4. Because sera were generally tested at the initial dilution of 1/8 or 1/10 and were considered as negative for VCA antibody if there were no visible reactions,2,3 we concluded that the congenitally infected infant was EBV-seronegative.
See table in the PDF file