Facts about CMV/HSV/Syphilis A positive test for CMV IgG indicates that a person was infected with CMV at some time during their life but does not indicate when a person was infected. About 10% of babies with congenital CMV have signs, such as jaundice, rash, microcephaly, or low weight, at birth. Congenital syphilis continues to surge, increasing 203 percent since 2017. About 15% of babies with congenital CMV will not have signs at birth but will later develop hearing loss. Pathogen Detection Kits Our quick, easy, and cost-effective kits are designed to rapidly identify any pathogen (virus, bacteria, fungi) in any environment. LEARN MORE