Facts about CMV/HSV/Syphilis Young children are a common source of CMV. By the age of 5 years, 1 in 3 children has been infected with CMV but usually does not have symptoms. About 10% of babies with congenital CMV have signs, such as jaundice, rash, microcephaly, or low weight, at birth. 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 one out of every 200 babies is born with congenital CMV infection. 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