ATLANTA - In the coming weeks, as hot and humid summer weathersettles in,Abercrombie and Fitch Down Jacke, cases of swine flu are expected to slow significantlyacross the United States.For reasons not clear to scientists, influenza viruses justdon't spread much during summer in parts of the world that havepronounced seasons."The whole question of seasonality is one that's fascinatedinfluenza researchers and the public alike," said Dr,Oakley Radar Sunglasses. Nancy Cox,who heads the influenza division at the Centers for Disease Controland Prevention in Atlanta,Reebok Men.The change of seasons within weeks of scientists identifying thenew 2009 H1N1 flu virus is good news for the United States, Mexicoand other countries in the Northern Hemisphere. In the UnitedStates the flu season typically runs from October through April,with the cases usually peaking in February.But in the Southern Hemisphere, which is heading toward itswinter, the flu season is ramping up - just in time for the arrivalof the new virus that people there have never been exposed to orvaccinated against.Scientists around the world will be watching closely whathappens and using the information to prepare for the swine flu'sexpected return to the Northern Hemisphere and the United States inthe fall.Will swine flu become the dominant flu strain in the SouthernHemisphere, crowding out the other seasonal flu viruses? Does theseverity of disease caused by the new virus increase or decrease?Does it develop resistance to antiviral drugs? Does the geneticmakeup of the new virus change - and how will that affect itsvirulence and efforts to develop a vaccine before the flu seasonhits the U.S. next fall?Experts said the answers to these questions are key topredicting what may happen here in the fall."During this period of time, between now and fall, is criticallyimportant to individual preparedness, the community preparednessand how the impact of this could be on our communities should thisvirus come back in a severe form," Dr. Richard Besser, acting CDCdirector, said.Besser noted that transmission of the swine flu virus continuesin the U.S., and he strongly advised against people intentionallytrying to expose themselves to it. There have been some reportsnationally of people holding "swine flu parties" in the hopes thatearly exposure may provide later protection.Besser encouraged the public to continue to wash hands, covercoughs and stay home when ill to slow the spread of thedisease."Hopefully we'll be aided by warmer weather," he said,Abercrombie & Fitch T-Shirts.Scientists aren't sure why the spread of flu tends to be limited- though not eliminated - in the summer. Temperature and humiditymay play a role, as may people congregating indoors duringwinter.While health officials continue to tally new cases, the exerciseof identifying the mere presence of swine flu is becoming moot withthe recognition that it's circulating throughout the U,cheap Oakley sunglasses.S,Michael Kors Watches. and itsseverity now is similar to seasonal flu.So the focus is shifting to what may happen next fall."We're worrying appropriately," said Dr. Patrick O'Neal,director of preparedness for the Georgia Division of Public Health.By fall, O'Neal said he hopes that a swine flu vaccine will havebeen developed.Based on initial reports of severe cases in Mexico, there weresome early fears that this swine flu may be more virulent than theseasonal flu strains that circulate every year. But CDC officialssaid it appears similar to seasonal flu in the range of illness itcauses.Experts note that during the first wave of the infamous 1918pandemic flu in March of that year, it appeared mild - then becamehighly fatal the next fall. Related articles:

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