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HD 4718

An Act relative to newborn screenings for congenital cytomegalovirus

194th Legislature (2025-2026) Introduced by Paul Donato and 17 co-sponsors

Massachusetts mandates newborn screening for congenital cytomegalovirus to enable early detection and treatment of infections affecting 1 in 200 newborns.

Senate concurred
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Bill Summary · HD 4718

Legislative bill overview

HD 4718 requires Massachusetts to add congenital cytomegalovirus (CMV) screening to the state's standard newborn screening panel. CMV is a common viral infection that can cause significant complications in newborns, including hearing loss, developmental delays, and vision problems. The bill mandates that all newborns receive testing for this condition as part of routine hospital screening procedures.

Why is this important

Congenital CMV affects approximately 1 in 200 newborns, making it one of the most common congenital infections, yet many cases go undetected without specific screening. Early detection enables prompt medical intervention—including antiviral treatment—that can substantially reduce hearing loss and other developmental disabilities. Currently, most U.S. states do not routinely screen for CMV, leaving affected infants at risk for preventable complications that could have lifelong educational and health implications.

Potential points of contention

  • Cost and resource allocation: Adding a new screening test increases laboratory costs and requires staff training; funding mechanisms and which entities bear expenses may be disputed
  • Test accuracy and follow-up protocols: Questions about false positive rates, the need for confirmatory testing, and implementation timelines for referral systems
  • Parental counseling requirements: Unclear guidance on how healthcare providers should communicate positive results and treatment options may create liability and implementation concerns

Compiled from official sources — confirm details with the bill’s official record.

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