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S 1573

An Act relative to newborn screenings for congenital cytomegalovirus

194th Legislature (2025-2026) Introduced by Jo Comerford and 24 co-sponsors

Massachusetts bill requires newborn screening for congenital cytomegalovirus to detect infections early and enable preventive treatment for hearing loss and developmental complications.

Hearing rescheduled to 07/14/2025 from 01:00 PM-06:05 PM in A-1 and Virtual Hearing updated to New End Time
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Bill Summary · S 1573

Legislative bill overview

S 1573 would require Massachusetts to add congenital cytomegalovirus (CMV) to its newborn screening program. CMV is a common viral infection that can cause serious complications in infants, including hearing loss, developmental delays, and vision problems. The bill mandates that all newborns be tested for the virus shortly after birth.

Why is this important

Early detection of congenital CMV allows for prompt medical intervention that can prevent or reduce severity of complications, particularly hearing loss. Currently, Massachusetts does not screen for CMV despite it being one of the most common congenital infections affecting approximately 0.5-1% of live births. Adding this screening could identify affected infants before symptoms become irreversible.

Potential points of contention

  • Cost and implementation: Adding a new screening test requires laboratory capacity, training, and funding; the fiscal impact on the state's screening program is unclear
  • False positives and follow-up care: CMV screening may identify infections that would cause no clinical symptoms, potentially creating anxiety and unnecessary medical procedures for families
  • Treatment availability: The antiviral medication (valganciclovir) used to treat symptomatic congenital CMV has side effects and requires specialist oversight; unclear if Massachusetts has adequate infrastructure for managing positive cases

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

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