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??: ???????     ??: 2020-06-04 14:36:18
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GlobaleffortaimstofinddiseasevectorsthatcanjumpfromanimalstohumansChinawillhelpleadaprojecttoidentifyunknownvirusesfromwildlifetobetterpreparehumansformajorepidemics?-?ifnotglobalpandemics.Theprojectistobelaunchedthisyear,accordingtooneofthecountry'stophealthofficials.TheGlobalViromeProjectwillstartinChinaandThailandwithfieldworktocollectsamplesfromwildanimalsandanalyzethevirusesdetected,saidGaoFu,headoftheChineseCenterforDiseaseControlandPrevention."Scientistswillcollectvirussamplesfromanimalssuchasbatsandratsforstudyusingtechniqueslikenextgeneration(DNA)sequencingtofindwhethernewvirusesexist,"hesaid.Theproject,estimatedtocostupto.2billion,isexpectedtotake10yearsandinvolvesmanycountriesincludingtheUnitedStates,BrazilandNigeria.Throughmoreintensiveandextensivestudyofvirusesfromanimalsthatcouldinfecthumans,itmaybepossibletodealwithvirusesusingpreemptivecontrolsandpreventioninsteadofpassive,reactivemeasures,Gaosaid."Weallknowtherearealmostcertainlynewvirusesthatcouldcausethenextglobalpandemic,butbasedontheexistingearlywarningcapacityfordiseases,wedonotknow,forexample,whichviruswillcauseanepidemic,"Gaosaid."Wearesurethatnewvirusstrainswillappearinthefuturealongwithchangesinourecology,environmentandhumanbehaviors."Forinstance,humans'abuseofantibioticshasleadtothepotentialdevelopmentofsuperbugs."Therearemanyviruseslivinginwildanimals,sowecanidentifyvirusesandthoroughlystudythosethatcouldpasstohumans,"Gaosaid."Ideallywecandevelopvaccinesandadiagnosisforsuchvirusesevenbeforetheycausehumanepidemics."Itisknownthat263virusescaninfecthumans,butscientistsestimatetheremaybemorethanhalfamillionvirusesthatliveinbirdsandmammalsandthatareunknowntohumansthatmaybecapableofinfectinghumans,andtheyaretheprimarysubjectoftheproject'sresearch,Gaosaid.Evenifalargenumberofsuchunknownvirusesareidentified,itispossiblethatjustasmallfractionofthemhavetheabilitytocausemajorepidemicsthatcausehumandeaths,hesaid.However,consideringthehugecostofamajorepidemiclikeSARStohumanhealthandeconomies,thefindingsoftheprojectstillhavethepotentialtogreatlyreducelossesthroughimprovedearlydiagnosisandidentificationofhostsvulnerabletoanewvirusafteranoutbreak,accordingtoGao.AsimilarprojectcarriedoutbytheUSAgencyforInternationalDevelopmentprovedthefeasibilityoftheGlobalViromeProjectandprovideshelpfulexperience,hesaid.TheUSAIDproject,knownasPredictandlaunchedin2009,withChinaaparticipant,ledtofindingsofmorethan1,000virusespreviouslyunknowntohumans.Theprojectcostwasover0million,hesaid.SomeofthetechnologiesusedforthatprojecthaveprovedreliableandeconomicallyaffordableandcanbeusedfortheGlobalViromeProject,Gaosaid.? ?? ?Beijingdisagreeswithcharacterizationofbombersonislandas'militarization'TherecentlandingofbomberaircraftonaSouthChinaSeaislandbythePeople'sLiberationArmyAirForceispartofnormaltrainingthatshouldnotbeover-interpreted,ForeignMinistryspokesmanLuKangsaidonMonday.LumadetheremarkwhenhewasrequestedtocommentonthereactionoftheUnitedStatesandthePhilippinestotheexercises.PentagonspokesmanU.S.MarineLieutenantColonelChristopherLogansaidChina's"continuedmilitarizationofdisputedfeaturesintheSouthChinaSeaonlyservestoraisetensionsanddestabilizetheregion",TheAssociatedPressreported.LurebukedthePentagon'scomments,sayingthetrainingexerciseisnotwhattheU.S.hascalled"militarization"."TheSouthChinaSeaislandsareChina'sterritory.ThetrainingisanormalexerciseconductedbytheChinesemilitary.It'snotnecessaryforotherpartiestomakeanover-interpretation,"Lusaid."Theyaretotallydifferentinnaturethanthebehaviorofdrivingonecountry'sownmilitaryvesselsandaircraftacrossalong,longdistancetotheSouthChinaSeaandposingathreattoregionalcountries,"Luadded.Bombersofdifferenttypes,includinganunspecifiednumberofH-6KsfromadivisionofthePLAAirForce,tookofffromanairportinsouthernChinaandmadeasimulatedstrikebeforelandingonanislandintheSouthChinaSea,accordingtoanAirForcestatementonFriday.ThePhilippineDepartmentofForeignAffairssaidinastatementonMondayitis"closelymonitoringdevelopments"intheSouthChinaSeaand"takingtheappropriatediplomaticactionnecessary",butdidnotnameChina.TheU.S.hasdispatcheditsmilitaryvesselsandaircrafttotheSouthChinaSeaforyears.ItsB-52bomberscarriedouttrainingexercisesinthevicinityoftheSouthChinaSeainlateApril,ReutersquotedtheU.S.AirForceassaying.ThenewscamelessthanamonthaftertheU.S.senttheaircraftcarrierUSSTheodoreRoosevelttotheSouthChinaSea.CountriesneedtogetusedtoChina'straininginitsownterritory,saidTengJianqun,aresearcherattheChinaInstituteofInternationalStudies.Suchtraining,inlinewithinternationallawandnotthreateningthesecurityofothercountries,isnot"militarization",hesaid.TheU.S.shouldstop"pointingitsfingers"atsuchtraining,whichwillnotalterChina'sdeterminationtosafeguarditsterritory,hesaid.? ?? ?


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