Facts about CMV/HSV/Syphilis About 15% of babies with congenital CMV will not have signs at birth but will later develop hearing loss. 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. There are currently no vaccines for CMV. Over half of adults have been infected with CMV by age 40. 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