Crimean Congo Virus Incident At Montana Lab, No Public Threat

Officials say an employee was exposed but quickly isolated with no infection detected.

Published on Feb. 25, 2026

An employee at the Rocky Mountain Laboratories in Hamilton, Montana was exposed to the Crimean Congo hemorrhagic fever virus due to a breach in personal protective equipment, but officials say there is no public threat as the employee tested negative for infection and was quickly isolated.

Why it matters

While the incident did not result in any spread of the dangerous virus, it highlights the potential risks associated with handling such pathogens, even at highly secure research facilities. The public will likely have heightened concerns about biosafety and the handling of deadly viruses, especially in their local communities.

The details

According to the Ravalli Republic, the employee was exposed to the Crimean Congo hemorrhagic fever virus, which can cause severe illness and death in humans, due to a breach in their personal protective equipment while working at the Rocky Mountain Laboratories in Hamilton. The employee was quickly isolated and monitored, and later tested negative for infection. The National Institutes of Health also confirmed there was no threat to the general public.

  • The incident occurred on February 19, 2026.

The players

Rocky Mountain Laboratories

A biomedical research facility located in Hamilton, Montana that conducts research on dangerous pathogens.

Got photos? Submit your photos here. ›

What’s next

Officials will likely review safety protocols at the lab to determine how the exposure occurred and make any necessary improvements to prevent future incidents.

The takeaway

While the Crimean Congo virus incident at the Montana lab did not result in any infections, it serves as a reminder of the importance of strict biosafety measures when handling deadly pathogens, and the need for transparent communication with the public to address any concerns about the safety of such research facilities in local communities.