Last Friday, BIS released a final rule implementing certain understandings of the annual plenary of the Australia Group in June. The new rules apply controls to pipes, vessels, valves and related equipment made of niobium or niobium alloys. It also changed the classifications for shiga-like ribosome inactivating proteins and for the fungi coccidioides immitis and coccidioides posadisii from ECCN 1C360 to ECCN 1C351, which appears to have stricter controls. This change will also make coccidioides immitis and coccidioides posadisii the first fungi to be controlled under 1C351.
Some interesting background information on the two fungi is provided by Tom Volk, a biology professor at the University of Wisconsin at LaCrosse. According to Professor Volk infection with either of the related fungi often results in a mild disease that confers then confers lifetime immunity to the disease. In other cases it may result in much more serious, and possibly fatal, illness. It is endemic to semi-arid areas, most notably the San Joaquin Valley in California. Infection occurs by inhalation of the spores.
Professor Volk has this to say about the weaponization of the fungi:
Since this is the most virulent of the fungal pathogens, it should never be grown out in culture except under very controlled conditions, such as using gloved transfer hood and in screw cap vials. The fungus produces its small arthrospores in abundance in culture. If these escape, they can cause lab infections. These arthrospores can pass through a 2 mm filter found in normal biological safety cabinets/ hoods! It is a very dangerous organism. There have been persistent rumors that it is being developed for use in biological warfare, but it could probably not be grown in a large enough quantity to be used for use in bioterrorism because of the danger it would pose for the people growing it.
Professor Volk’s page on the two fungi has more interesting information, including some unpleasant pictures of the effect of the pathogens, all of which will convince you that even if they don’t have much use as CBW agents it is still probably a good idea to regulate their export.
Copyright © 2006 Clif Burns. All Rights Reserved.
(No republication, syndication or use permitted without my consent.)