怎样预防H1N1病毒写一篇大学英语作文

Swinefluhasyettoescalateintoaglobalpandemic,buthere'swhattodoifitdoes5WaystoProtectYourself(andOthers)fromSwineFluExpertssaythatthestepsyoushouldtaketoshieldyourselffromswinefluarenotmuchdifferentthanthoseyoumighttaketowardoffseasonalflu。1.Don'ttouchyourfaceAboveall,keepyourhandsawayfromyoureyes,mouthandnose,allofwhichserveaspathwaysforthevirustoenteryourrespiratorytract,saysAllisonAiello,anepidemiologistattheUniversityofMichiganSchoolofPublicHealthinAnnArbor。2.WashyourhandsIfyoumusttouchyourface,scrubyourhands,gettingunderthefingernailsandinsideallcrevices,for20to30secondswithhotsoapandwaterbeforehand,Aiellosays.Inadditiontodislodgingdirtthatmaycontainvirusparticles,soapscontainsurfactants[theprimarycomponentsofdetergents]whichcandamagethelipid[fat]protectingvirusparticles,sheexplains.Soapshouldthereforebeeffectiveagainstallfluviruses。3.UseahandsanitizerNosinknearby?Thenuseanalcohol-basedhandsanitizer,Aielloadvises.Aboutaquarter-sizespot,rubbedalloverthehandsuntilthesanitizerevaporates(usually10to15seconds)，shoulddoit.Alcoholcaninactivatevirusesbydestroyingthestructureoftheirproteins,shenotes。4.CoveryournoseandmouthWhensomeonesneezesorcoughs,liquiddropletspackingfluvirusescantravelasfarasthreefeet(onemeter)throughtheairanddescendonyournoseormouth,soit'sbesttomaintainatleastanarm's-lengthdistancewhentalkingtosomeonewhoshowssignsofinfection,saysLouiseDembry,directorofepidemiologyatYale–NewHavenHospitalinConnecticut.Andtoprotectothers,coveryourmouthandnosewithatissuewhenyoucoughorsneeze,andcleanyourhandsafterward,shesays,notingthatvirusescanremaininfectiousforhours,ifnotlonger,whentheylingerontheskinorothersurfacessuchaskeyboardsandsubwaypoles。5.ConsiderbuyingamaskincaseyouneeditinthefutureFrompressphotos,itseemsthatMexico'sentirepopulationhasdonnedsurgicalmasks,buttheverdictisstilloutonhoweffectivetheyareinstemmingthespreadofflu,accordingtoAiello.Someresearchsuggeststhatmasks—eitherthesurgicalvarietyorrespiratorscalledN95'sspeciallydesignedtofilteroutwaterdropletscontainingviruses—reducetheriskofcontractingthefluorotherrespiratorypathogensbyasmuchas80percent,butresearchbyAiello'steamsuggeststhatmasksdolittleunlessusedinconjunctionwithdiligenthandwashing。AccordingtotheU.S.CentersforDiseaseControlandPrevention,thereisextremelylimiteddataontheeffectivenessoffacemasksandrespiratorsforblockingfluspreadincommunities.Theagencysuggests,however,thatpeopleconsiderusingthemwhenit'simpossibletoavoidcrowdedsettingsorclosecontactwithothersinareaswhereswineflutransmissionhasbeenconfirmed:facemasksforcrowdedplacesandrespiratorsforsituationsthatinvolveclosecontactwithpeoplewhohaverespiratoryinfections(caringforasickfamilymember,forexample)。参考资料：http://www.rr365.com/english/200905/english_21262.htmlhttp://zhidao.baidu.com/question/103057019.html?fr=qrl&cid=197&index=1&fr2=query