Officials are investigating how a deadly type of bacteria was released from a high-security laboratory at the Tulane National Primate Center in Louisiana. Officials say there is no risk to the public.
“The fact that they can’t identify how this release occurred is very concerning,” said Richard Ebright, a biosafety expert from Rutgers University in New Jersey, who testified before Congress last summer in the wake of lab incidents at federal agencies involving anthrax, smallpox and a deadly strain of avian influenza.
The Tulane incident involves the release, possibly in November or earlier, of a bacterium called Burkholderia pseudomallei, which is primarily found in Southeast Asia and northern Australia and is spread to humans and animals through direct contact with contaminated soil and water where it can live and grow. Tulane’s research, which has been halted by federal officials, was part of an effort to develop a vaccine against the bacteria. It was conducted mostly with rodents inside a secure biosafety level 3 laboratory with multiple layers of safety equipment that were supposed to ensure the pathogen couldn’t get out.
Yet at least four monkey-like rhesus macaques — that were never used in the experiments and were kept in large outdoor cages in another part of the 500-acre facility — have been exposed to the bacteria, initial tests have found. Two of the macaques became ill in November; both eventually had to be euthanized. Meanwhile, a federal investigator, who became ill 24 hours after visiting the facility in January as part of the ongoing release investigation, has also tested positive for exposure to the bacteria — though it remains unclear whether her exposure may have occurred during international travel and not at the lab.
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