Why is this year’s flu packing such a wallop? And why is it taking such a harsh toll on young children?
One reason is that the flu virus has changed, or mutated, slightly in the nine months since flu makers designed this year’s vaccine, and those changes may be rendering the vaccine less effective, according to flu expert John Treanor, M.D., director of the Vaccine Treatment and Evaluation Unit at the University of Rochester. Treanor provides an update on this year’s flu – and explains the reasons for its unusual severity – in an article in the January 15, 2004 issue of the New England Journal of Medicine.
While this year’s flu vaccine may be less effective than expected, an additional problem is making this flu season worse for young children. The flu virus most prevalent this year is from a family of viruses that has been scarce in the United States over the last three years. That means nearly all children ages three and under have never encountered the virus – or one similar to it – and haven’t produced antibodies that can fight it.
Christopher DiFrancesco | UMRC
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For the first time ever, scientists have determined the cosmic origin of highest-energy neutrinos. A research group led by IceCube scientist Elisa Resconi, spokesperson of the Collaborative Research Center SFB1258 at the Technical University of Munich (TUM), provides an important piece of evidence that the particles detected by the IceCube neutrino telescope at the South Pole originate from a galaxy four billion light-years away from Earth.
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Physicists working with Roland Wester at the University of Innsbruck have investigated if and how chemical reactions can be influenced by targeted vibrational excitation of the reactants. They were able to demonstrate that excitation with a laser beam does not affect the efficiency of a chemical exchange reaction and that the excited molecular group acts only as a spectator in the reaction.
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Optical spectroscopy allows investigating the energy structure and dynamic properties of complex quantum systems. Researchers from the University of Würzburg present two new approaches of coherent two-dimensional spectroscopy.
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Ultra-short, high-intensity X-ray flashes open the door to the foundations of chemical reactions. Free-electron lasers generate these kinds of pulses, but there is a catch: the pulses vary in duration and energy. An international research team has now presented a solution: Using a ring of 16 detectors and a circularly polarized laser beam, they can determine both factors with attosecond accuracy.
Free-electron lasers (FELs) generate extremely short and intense X-ray flashes. Researchers can use these flashes to resolve structures with diameters on the...
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