预防流感医学知识专家讲座

Speaker:Chenjia

Maker:Xuebei

Zhaoyanling

WangXiqiContent1WhatIstheFlu?2Flu

Symptoms3HowFluWorks?4TypesofFlu5PreventionWhatIstheFlu?FirstdefinitionFluisalsocalledtheinfluenza.It'saninfectionthatcausesa

fever,chills,cough,bodyaches,

headaches,andsometimesearachesor

sinusproblems.WhatIstheFlu?SeconddefinitionThefluisarespiratoryillnesscausedbytheinfluenzavirus.Thefluisnotthesameasacold,althoughtheysharemanyofthesamesymptoms.Thecoldiscausedbyadifferentvirus,andittendstohavemildersymptomsthantheflu.Coldsarealsolesslikelytocauseseriouscomplications.Flu

Symptoms1、Cough2、Sorethroat(喉咙痛)3、Headaches4、Muscleorbodyaches5、Feverorfeelingfeverish/chills（发烧或感觉发烧/寒战）6、Runnyorstuffynose（流鼻涕、鼻塞）7、Fatigue(tiredness)8、SomepeoplemayhavevomitinganddiarrheaFlu

SymptomsTheflualsoweakenstheimmunesystem,leavingitvulnerabletomoreseriousinfections.High-riskindividualsinparticulararesusceptibletoseriouscomplications.suchas:Bacterialpneumonia(细菌性肺炎)Dehydration(脱水)Sinusproblemsandearinfections(primarilyinchildren)窦问题和耳部感染（主要是小朋友）Worseningofpreexistingconditions,suchasasthmaordiabetes（哮喘或糖尿病）HowFluWorks1.Thevirusenterstherespiratorytract.（呼吸道）2.Afterenteringtherespiratorytract,thevirusstartstoreplicateitself.Therespiratorytractbecomesswollenandinflamed.3.Onceinsidetherespiratorysystem,thevirusentersthebloodstream.thefirstsymptoms(cough)begintoshow.FluandtheCommonColdThefluandthecommoncoldhavesimilarsymptoms.Itcanbedifficulttotellthedifferencebetweenthem.Ingeneral,thefluisworsethanthecommoncold,theflutendstobemoresevereandusuallycomesonsuddenly,attimesitcanleadtodeath.Learningwhetheritisacoldorfluisimportantbecausetheflucanhaveseriouscomplicationssuchaspneumonia（急性肺炎）orevendeath.Treatingfluwithin48hoursofsymptomsisbest.Prescriptionantiviraldrugsmaycutthetimeyou'resick.TypesofFluTherearethreetypesoffluviruses:A,B,andC.

InfluenzaAcaninfectarangeofmammalsandbirdsaswellashumans,whiletypesBandCinfectmainlyhumans.H1N1Influenza(SwineFlu)H1N1influenzaisatypeofinfluenzaA.Itisknownasswineflubecauseitprimarilyinfectspigs.Transmissiontohumansisuncommon,butitcanoccurifhumanscomeintocontactwithinfectedpigsorwithenvironmentscontaminatedbythevirus.Aninfectedhumancanthenspreadthediseasetootherhumans.Althoughitalsocirculatesinpigs,youcannotgetitbyeatingproperlyhandledandcookedporkorporkproducts.ThebestwaytopreventtheH1N1fluistogettheseasonalfluvaccine.Youshouldalsofollowouradvisetokeepyourselfhealthyduringfluseason.H1N1Influenza(SwineFlu)H5N1BirdFluTheavianinfluenzavirus,orbirdflu,occursnaturallyinwildbirds,butdoesnotmakethemsick.Becausethevirusisverycontagiousamongbirds,avianinfluenzaviruscanbedeadlyiftransmittedtodomesticatedbirds.HumaninfectionsarecausedbytransmissionoftheInfluenzaAvirusfrominfectedbirdstohumans.H5N1BirdFluAlthoughH5N1doesnotusuallyinfecthumans,nearly650casesofhumancasesofH5N1havebeenreportedfrom15countriessince2023.FeverandcoughAcuterespiratorydistressShortnessofbreath/difficultybreathingAbdominal

painDiarrheaSymptomsHowcanwepreventhighlypathogenicH5N1virusinfection?Thebestwaytopreventinfectionistoavoidanycontactwithsickordeadpoultry.ThisincludesavoidingvisitinglivepoultrymarketsthatmaybeinfectedwithH5N1whentraveling.AlsoavoidsickpeoplewhomighthaveH5N1virusinfectioninaffectedcountries.H7N9isanewtypeofbirdflu,avianfludiscoveredinShanghaiandanhuifirstattheendofmarchin2023.FightingAgainstH7N9BirdFluwehadsuccessfullydevelopedthevaccinefortheH7N9birdfluvirus,aftertheflustrainhadleftmorethan130peopleinfected,with45fatalitiesreported.Vaccinationisthebestwaytoprotectyourselffromtheflu.Thereareadditionalstepsyoucantaketokeepyourselfandyourfamilyhealthythisfluseason.PreventionVACCINATEDEveryone6monthsofageandoldershouldgetvaccinatedagainsttheflu.TAKEPRECAUTIONSTakeeverydayprecautions,likewashingyourhands,toprotectyourhealth.ANTIVIRALMEDICATIONSIfyouareexposedtoorcaringforsomeonewiththeflu,talktoyourdoctoraboutpreventiveantiviralmedications.PreventionTherearestepsyoucantakeinyourdailylifetohelpprotectyoufromgettingtheflu.1.Washyourhandsoftenwithsoapandwateroranalcohol-basedhandrub.2.Avoidtouchingyoureyes,nose,ormouth.Germsspreadthisway.3.Trytoavoidclosecontactwithsickpeople.Prevent