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. An estimated 491 million people aged 15–49 (13%) worldwide have herpes simplex virus type 2 (HSV-2) infection, the leading cause of genital herpes. 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. Congenital syphilis continues to surge, increasing 203 percent since 2017. 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