Two U.S. government scientists charged with smuggling deactivated mpox virus into country

Two virologists employed at a federal research facility were arrested and charged with bringing deactivated mpox virus samples into the United States without authorization or declaration. Vincent Munster, who leads the virus ecology section at Rocky Mountain Laboratories in Hamilton, Montana, and his colleague Claude Kwe were stopped at Detroit Metropolitan Airport in January after returning from the Republic of Congo, where they had spent nine days. The country has been devastated by an mpox outbreak that killed more than 2,000 people, though health officials declared the two-year crisis over in April.

When questioned by federal agents at the airport, Munster denied carrying any biological materials or samples. He told investigators that necessary documentation was stored on his laptop and added, with apparent confidence, that he performed this kind of work routinely and did not need to produce paperwork. The FBI later determined his statements were materially false. Tests revealed that both men were indeed transporting vials of deactivated mpox virus—virus that had been rendered incapable of causing infection but retained scientific value for research purposes.

The charges center on two separate violations: smuggling biological materials into the country without proper authorization and making false statements to customs officers. Neither scientist obtained the required permissions before attempting to bring the samples across the border, and neither declared the vials during standard screening procedures. For a government laboratory, this represented a significant breach of biosecurity protocol and federal law.

Marcus Sykes, an official with the Office of Inspector General at the Department of Health and Human Services, characterized the alleged conduct as a fundamental violation of public trust. "Any deliberate effort to conceal and smuggle biological materials into the United States without proper authorization is a breach of the public's trust and could have placed the public at risk," he said in a statement. The language suggests that even deactivated samples carry regulatory weight—their movement across borders is not a matter of convenience but of national security and public health oversight.

The criminal complaint does not explain why Munster and Kwe believed they needed to bring these samples back to their laboratory, or why they chose not to follow established channels for transporting biological materials. Both men are experienced mpox researchers with extensive publication records in the field. Their decision to conceal the vials rather than declare them raises questions about their understanding of the rules, their assessment of risk, or their judgment about what the rules required.

Munster and Kwe did not respond to requests for comment. They are scheduled to appear in federal court in Missoula, Montana, on Wednesday. The case will likely turn on questions of intent: Did they knowingly violate the law, or did they believe they were operating within acceptable practice? The fact that Munster told investigators he "does this all the time" suggests he may have believed his actions were routine, though that claim will now be tested in court.

Mpox itself is not a novel threat. The virus was first identified in 1958 during disease outbreaks in laboratory monkeys. For decades, human cases were rare and clustered in central and West Africa among people with direct contact to infected animals. The disease typically presents as a rash and fever, and most people recover without intervention, though severe illness is possible. The recent outbreak in Congo, however, has demonstrated the virus's capacity to spread and cause significant mortality, making research into its behavior and transmission increasingly urgent—and making the secure, authorized movement of samples all the more important.