The Centers for Disease Control and Prevention’s (CDC) infectious diseases laboratories accept specimens from state public health laboratories and other federal agencies for analysis. Effective March 30, 2026, the CDC updated several test orders in its directory according to an update on its website.
New test orders:
- Brucella Species Antimicrobial Susceptibility Testing – CLIA
- New World Hantavirus Testing – Non-CLIA
Deleted test orders (no longer performed at CDC):
- Filariasis Serology – CLIA
- Toxocariasis Serology – CLIA
Numerous tests have been temporarily paused (see examples below). The reason given for some is that commercial diagnostic testing is available.
- Adenovirus Molecular Detection – CLIA
- Poxvirus Molecular Detection – CLIA
- Poxvirus Serology – CLIA
- Rabies Antibody Titer (Human) – CLIA
- Rabies Antemortem Human Testing – CLIA
According to the New York Times, “layoffs, hiring freezes and resignations have shrunk the number of qualified scientists who can assist state labs. The CDC’s rabies and pox virus teams have lost many of their members. By July, the rabies team will be down to just one person with the clinical expertise to advise state and local officials, and the pox virus team will have none,” according to an anonymous source.
