Facts about CMV/HSV/Syphilis Over half of adults have been infected with CMV by age 40. CMV infects between 60% and 70% of adults in industrialized countries and nearly 100% in emerging countries. 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. CMV testing should be done within 2-3 weeks of birth to determine if it is congenital. 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