CDC Temporarily Suspends Diagnostic Testing for Multiple Infectious Diseases
The Centers for Disease Control and Prevention (CDC) has announced a temporary pause in its diagnostic testing services for a range of infectious diseases, including rabies, monkeypox, and more than two dozen other pathogens. This move marks a significant expansion in the number of tests halted compared to previous instances, raising concerns among public health experts.
Reasons Behind the Testing Pause
According to Scott Becker, chief executive officer of the Association of Public Health Laboratories, while the CDC has paused lab testing before, the current suspension involves more types of tests than ever, and the exact reasons are not entirely clear. A government spokesman, Andrew Nixon of the U.S. Department of Health and Human Services, described the pause as temporary, attributing it to "a routine review to uphold our commitment to high quality laboratory testing." He added that some tests are expected to resume in the coming weeks, with the CDC ready to support state and local partners in accessing necessary public health testing.
Impact of Staffing Reductions
The testing pause follows a dramatic downsizing at the CDC over the past year, involving layoffs, retirements, resignations, and the nonrenewal of temporary appointments. Estimates indicate staffing fell by 20% to 25%, affecting various departments, including laboratories. Specific labs, such as those for poxvirus and rabies, lost about half their prior staff, while the malaria branch experienced even more severe cuts, as reported by the National Public Health Coalition, a group of current and former CDC workers.
Scope of Affected Tests
The list of paused tests includes:
- Common infections like Epstein-Barr virus and varicella zoster virus (responsible for chickenpox and shingles), for which commercial testing is available.
- More exotic agents, such as parasitic worms causing "snail fever" and viruses linked to "sloth fever."
Becker noted that specialized state labs in places like New York and California may help fill the gap during this pause, but he expressed concern if the suspension becomes permanent.
Historical Context and Future Implications
The CDC's laboratory operations faced criticism during the COVID-19 pandemic, leading to a review by a work group. Since 2024, the agency has been evaluating its testing protocols. Becker highlighted that staffing issues and other factors can contribute to taking tests offline. As the CDC navigates these challenges, the public health community watches closely to ensure diagnostic capabilities remain robust for emerging and existing threats.
