The CDC Has Stopped Testing for Dozens of Diseases and States Are Now Carrying the Load

Federal laboratory changes are forcing a temporary shift in how infectious diseases are diagnosed across the United States, with state systems taking on a larger role as certain CDC testing services go offline. The change is affecting how complex cases are confirmed and how quickly results can be delivered in some situations.

The Centers for Disease Control and Prevention has paused diagnostic testing for more than two dozen infectious diseases, including rabies and mpox. These services are typically used when state and local laboratories need federal support for specialized or confirmatory testing.

The scope of the pause is broader than previous interruptions, covering a wide range of pathogens from common viral infections to rarer parasitic diseases. Some of the affected tests can be handled by commercial or hospital laboratories, but others depend heavily on federal capacity.

Federal officials have described the move as temporary and linked it to an internal review of laboratory operations. The stated goal is to maintain high testing standards while evaluating how services are structured and delivered.

State public health laboratories are now absorbing additional demand, particularly in larger states with more developed diagnostic infrastructure. These facilities are being relied upon to maintain continuity in disease detection and case confirmation during the pause.

Reporting by the Associated Press noted that the CDC posted a list of unavailable tests and described the suspension as part of a routine evaluation, with federal officials indicating that some services may return in the coming weeks.

Public health experts have pointed to potential downstream effects, especially in areas that depend on federal laboratories for specialized diagnostics. Delays in confirmation can affect treatment decisions, contact tracing, and efforts to monitor disease spread.

The impact varies by location, with well-resourced states better positioned to manage the additional workload than smaller or underfunded jurisdictions. In some cases, regional partnerships are being used to help distribute testing responsibilities.

Health officials continue to advise individuals to seek care promptly if exposure is suspected, as early evaluation remains critical for many infectious diseases. Providers are directing patients to available testing options while federal laboratory services remain under review.