H7N9 outbreak linked to waterfowl migration
<p><span word="Download">Download</span></p><p><span word="The">The</span> <span word="ongoing">ongoing</span> <span word="outbreak">outbreak</span> <span word="of">of</span> <span word="H">H</span>7<span word="N">N</span>9 <span word="infections">infections</span> <span word="in">in</span> <span word="humans">humans</span> <span word="is">is</span> <span word="linked">linked</span> <span word="to">to</span> <span word="the">the</span> <span word="migration">migration</span> <span word="of">of</span> <span word="wild">wild</span> <span word="birds">birds</span>, <span word="research">research</span> <span word="shows">shows</span>.</p><p><span word="He">He</span> <span word="Hongxuan">Hongxuan</span>, <span word="a">a</span> <span word="principal">principal</span> <span word="investigator">investigator</span> <span word="at">at</span> <span word="the">the</span> <span word="Institute">Institute</span> <span word="of">of</span> <span word="Zoology">Zoology</span> <span word="of">of</span> <span word="the">the</span> <span word="Chinese">Chinese</span> <span word="Academy">Academy</span> <span word="of">of</span> <span word="Sciences">Sciences</span>, <span word="confirmed">confirmed</span> <span word="the">the</span> <span word="connection">connection</span>, <span word="saying">saying</span> <span word="it">it</span> <span word="is">is</span> <span word="linked">linked</span> <span word="to">to</span> <span word="the">the</span> <span word="migration">migration</span> <span word="of">of</span> <span word="wild">wild</span> <span word="waterfowl">waterfowl</span>.</p><p>"<span word="The">The</span> <span word="first">first</span> <span word="outbreak">outbreak</span> <span word="of">of</span> <span word="H">H</span>7<span word="N">N</span>9 <span word="happened">happened</span> <span word="in">in</span> <span word="the">the</span> <span word="Yangtze">Yangtze</span> <span word="River">River</span> <span word="Delta">Delta</span> <span word="area">area</span> <span word="in">in</span> <span word="March">March</span>, <span word="and">and</span> <span word="later">later</span> <span word="in">in</span> <span word="April">April</span>, <span word="cases">cases</span> <span word="of">of</span> <span word="infection">infection</span> <span word="were">were</span> <span word="reported">reported</span> <span word="in">in</span> <span word="northern">northern</span> <span word="provinces">provinces</span>. <span word="The">The</span> <span word="infection">infection</span> <span word="time">time</span> <span word="and">and</span> <span word="route">route</span> <span word="coincided">coincided</span> <span word="with">with</span> <span word="the">the</span> <span word="migration">migration</span> <span word="of">of</span> <span word="water">water</span> <span word="birds">birds</span>," <span word="he">he</span> <span word="said">said</span>.</p><p><span word="In">In</span> <span word="early">early</span> <span word="April">April</span>, <span word="scientists">scientists</span> <span word="at">at</span> <span word="He">He</span>'<span word="s">s</span> <span word="laboratory">laboratory</span> <span word="visited">visited</span> <span word="Shanghai">Shanghai</span> <span word="and">and</span> <span word="Zhejiang">Zhejiang</span> <span word="province">province</span> <span word="to">to</span> <span word="take">take</span> <span word="virus">virus</span> <span word="samples">samples</span> <span word="from">from</span> <span word="wild">wild</span> <span word="birds">birds</span>, <span word="and">and</span> <span word="they">they</span> <span word="found">found</span> <span word="that">that</span> <span word="the">the</span> <span word="regions">regions</span> <span word="hit">hit</span> <span word="by">by</span> <span word="the">the</span> <span word="virus">virus</span> <span word="matched">matched</span> <span word="the">the</span> <span word="migratory">migratory</span> <span word="route">route</span> <span word="of">of</span> <span word="birds">birds</span> <span word="from">from</span> <span word="East">East</span> <span word="Asia">Asia</span> <span word="to">to</span> <span word="Australia">Australia</span>.</p><p><span word="The">The</span> <span word="laboratory">laboratory</span> <span word="monitored">monitored</span> 16 <span word="human">human</span> <span word="cases">cases</span> <span word="of">of</span> <span word="H">H</span>7<span word="N">N</span>9 <span word="and">and</span> <span word="found">found</span> <span word="that">that</span> 15 <span word="happened">happened</span> <span word="within">within</span> <span word="the">the</span> <span word="migratory">migratory</span> <span word="route">route</span> <span word="of">of</span> <span word="waterfowl">waterfowl</span>, <span word="he">he</span> <span word="said">said</span>. "<span word="The">The</span> <span word="human">human</span> <span word="infection">infection</span> <span word="rate">rate</span> <span word="of">of</span> <span word="H">H</span>7<span word="N">N</span>9 <span word="on">on</span> <span word="the">the</span> <span word="migratory">migratory</span> <span word="route">route</span> <span word="of">of</span> <span word="wild">wild</span> <span word="birds">birds</span> <span word="was">was</span> <span word="significantly">significantly</span> <span word="higher">higher</span> <span word="than">than</span> <span word="in">in</span> <span word="the">the</span> <span word="peripheral">peripheral</span> <span word="regions">regions</span>."</p><p><span word="Previous">Previous</span> <span word="research">research</span> <span word="of">of</span> <span word="influenza">influenza</span> <span word="A">A</span> <span word="viruses">viruses</span> <span word="supports">supports</span> <span word="the">the</span> <span word="finding">finding</span>. <span word="In">In</span> 2009, <span word="scientists">scientists</span> <span word="tracking">tracking</span> <span word="waterfowl">waterfowl</span> <span word="by">by</span> <span word="satellite">satellite</span> <span word="discovered">discovered</span> <span word="a">a</span> <span word="migratory">migratory</span> <span word="connection">connection</span> <span word="between">between</span> <span word="H">H</span>5<span word="N">N</span>1 <span word="outbreak">outbreak</span> <span word="areas">areas</span> <span word="in">in</span> <span word="China">China</span> <span word="and">and</span> <span word="Mongolia">Mongolia</span> <span word="and">and</span> <span word="published">published</span> <span word="the">the</span> <span word="finding">finding</span> <span word="in">in</span> <span word="the">the</span> <span word="International">International</span> <span word="Journal">Journal</span> <span word="of">of</span> <span word="Avian">Avian</span> <span word="Science">Science</span>.</p><p>"<span word="Wild">Wild</span> <span word="waterfowl">waterfowl</span> <span word="are">are</span> <span word="natural">natural</span> <span word="hosts">hosts</span> <span word="of">of</span> <span word="the">the</span> <span word="influenza">influenza</span> <span word="A">A</span> <span word="virus">virus</span>," <span word="He">He</span> <span word="said">said</span>. "<span word="The">The</span> <span word="current">current</span> <span word="influenza">influenza</span> <span word="A">A</span> <span word="viruses">viruses</span> <span word="have">have</span> <span word="all">all</span> <span word="been">been</span> <span word="found">found</span> <span word="in">in</span> <span word="birds">birds</span> <span word="before">before</span>."</p>
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