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Mutant H5N1 bird flu virus papers to be published in full

Scientists have explained the decision to publish the full versions of two papers on the H5N1 bird flu virus just months after they had opted to release only edited versions.

At a Royal Society meeting, Paul Keim, acting chair of the US National Science Advisory Board for Biosecurity (NSABB), explained how the board had advised the US Government that two papers about the virus be published but in an edited form.

The two papers—one written by Ron Fouchier from Erasmus Medical Center in Rotterdam and the other by Yoshihiro Kawaoka from University of Wisconsin-Madison—detailed how they had mutated the H5N1 virus so that it could be transmitted among mammals by air rather than solely by close physical contact, explains Reuters.

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As worries rise, research continues to argue that avian flu isn’t that deadly

As regular readers of Nobel Intent will know, the avian influenza virus H5N1 has been responsible for a lot of sleepless nights among the public health community (and latterly, the biosecurity community). Back in 2005, when we knew much less about the virus, the thought of an airborne pathogen with 70 percent mortality was truly terrifying. Since then, mortality estimates have dropped a little, but not much. But are those estimates completely off the mark? A paper published in Science makes the case that they are.

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WHO calls for publication of the full details of the new avian flu virus

When it infects humans, the avian flu is unusually lethal, killing over half the people who come down with symptoms. But, so far at least, the virus has only spread from birds to humans, and not between humans. Recently, some labs evolved a version of the avian flu that can be transmitted among ferrets while retaining its lethal nature. The researchers who did this work sequenced the flu genome, identified all the genetic changes, and sent publications in to Science and Nature.

That's where things got complicated, with the journals delaying publication and the National Science Advisory Board for Biosecurity stepping in. The end result was a moratorium on further research, with the journals discussing publishing a censored form of the original papers. During this pause, the World Health Organization convened its own panel of experts who released a statement on Friday, calling for the moratorium on new research to be extended, and saying that the papers should be published in full, even if that means an extensive delay.

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Study of deadly flu sparks debate amidst fears of new pandemic

The 2009 flu pandemic, although not especially deadly, revealed just how quickly a new influenza virus could elude surveillance and spread internationally. It also left health experts eying the disease that many fear could cause the next pandemic: H5N1, the avian flu. According to World Health Organization standards, that virus is phenomenally deadly, killing about half the people that contract it. So far, however, almost all the known cases came from people who were in direct contact with poultry; the flu doesn't seem to spread among mammals.  

The great unanswered question was whether we could continue to rely on H5N1's limited transmission. Recently, some researchers set out to answer that question, and came up with a disturbing answer: it was relatively easy to evolve a form of H5N1 that spread in ferrets, another mammalian species, without it losing any of its virulence. Two labs identified the exact mutations that enabled this new host range, and were preparing to publish their results in Science and/or Nature. At that point, the US government's National Science Advisory Board for Biosecurity (NSABB) responded by requesting that the journals delay publication and limit the content released. That, in turn, prompted the viral research community to put a two-month hold on further research.

That's where things stood on February 2, when the New York Academy of Sciences hosted a panel discussion on H5N1 and other dual-use research (research that has both public benefit and weapons applications). The panel included two members of the NSABB, representatives from both Science and Nature, a number of virus researchers, a public health expert, and a member of the Defense Department, and they spent two hours in a lively and sometimes contentious discussion of how to handle our current situation.

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US Government tries to restrict publication of details on avian flu virus that spreads among mammals

Although avian flu viruses have infected humans in the past (often with lethal effect), so far, these infections have come directly from birds. Over this past summer, however, researchers presented disturbing results at a scientific meeting. By growing the avian H5N1 virus in mammals for several generations, they had evolved a strain that can spread among mammals (ferrets, in this case) simply through the air. Additionally, researchers identified the mutations that enabled the virus to do so--the kind of information that would be enough to allow any competent molecular biologist to create an exact duplicate.

Like any scientists, these ones want to publish their results, but that's where things are getting messy. The US National Science Advisory Board for Biosecurity has asked both Nature and Science to "delete details regarding both scientific methodology and specific viral mutations before publishing." The journals recognize why the NSABB is concerned, but they also both feel that responsible researchers will need to know these details if they're to effectively study the risk of an H5N1 pandemic.

Currently, both have issued statements that they're considering the requests, but haven't yet decided how to proceed.

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