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More Medical News
Discovery explains why H1N1 virus cannot spread as effectively as seasonal flu
03 Jul 2009 - Posted by the Editorial Team
Researchers from the Massachusetts Institute of Technology, US, have revealed why the swine flu virus is unable to spread as effectively as seasonal flu.
Scientists discovered that the H1N1 virus has a surface protein that is unable to bind efficiently to the human respiratory tract's receptors.
Professor Ram Sasisekharan, who led the study, explained that, despite being able to bind to human receptors, the swine flu virus "clearly appears to be restricted".
"We need to pay careful attention to the evolution of this virus," the expert added.
Professor Sasisekharan added that this helps to explain why the H1N1 virus has not been able to spread as much as seasonal flu normally does.
He warned, however, that flu viruses are known for their ability to mutate quickly, with fears that the swine flu virus may be able mutate the way it binds to receptors.
According to the World Health Organization, over 300 people around the world have died after contracting the H1N1 virus.
Between December 2005 and February this year, a mere 12 cases of swine flu were reported in the US.
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