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1、Speaker:Chenjia Maker:Xuebei Zhaoyanling WangXiqiContent1WhatIstheFlu?2FluSymptoms3HowFluWorks?4TypesofFlu5PreventionWhatIstheFlu?FirstdefinitionFluisalsocalledtheinfluenza.It'saninfectionthatcausesa?fever,chills,cough,bodyaches,?headaches,andsometimesearachesor?sinusproblems.WhatIstheFlu?Sec
2、onddefinitionThefluisarespiratoryillnesscausedbytheinfluenzavirus.Thefluisnotthesameasacold,althoughtheysharemanyofthesamesymptoms.Thecoldiscausedbyadifferentvirus,andittendstohavemildersymptomsthantheflu.Coldsarealsolesslikelytocauseseriouscomplications.FluSymptoms1、Cough2、Sorethroat(喉嚨痛)3、H
3、eadaches4、Muscleorbodyaches5、Feverorfeelingfeverish/chills（發(fā)燒或感覺發(fā)熱/寒戰(zhàn)）6、Runnyorstuffynose（流鼻涕、鼻塞）7、Fatigue(tiredness)8、SomepeoplemayhavevomitinganddiarrheaFluSymptomsTheflualsoweakenstheimmunesystem,leavingitvulnerabletomoreseriousinfections.High-riskindividualsinparticulararesusceptibletoser
4、iouscomplications.suchas:Bacterialpneumonia(細菌性肺炎)Dehydration(脫水)Sinusproblemsandearinfections(primarilyinchildren)竇問題和耳部感染（主要是兒童）Worseningofpreexistingconditions,suchasasthmaordiabetes（哮喘或糖尿?。〩owFluWorks1.Thevirusenterstherespiratorytract.（呼吸道）2.Afterenteringtherespiratorytract,thevirusstart
5、storeplicateitself.Therespiratorytractbecomesswollenandinflamed.3.Onceinsidetherespiratorysystem,thevirusentersthebloodstream.thefirstsymptoms(cough)begintoshow.FluandtheCommonColdThefluandthecommoncoldhavesimilarsymptoms.Itcanbedifficulttotellthedifferencebetweenthem.Ingeneral,thefluisworset
6、hanthecommoncold,theflutendstobemoresevereandusuallycomesonsuddenly,attimesitcanleadtodeath.Learningwhetheritisacoldorfluisimportantbecausetheflucanhaveseriouscomplicationssuchaspneumonia（急性肺炎）orevendeath.Treatingfluwithin48hoursofsymptomsisbest.Prescriptionantiviraldrugsmaycutthetimeyou'resi
7、ck.TypesofFluTherearethreetypesoffluviruses:A,B,andC.InfluenzaAcaninfectarangeofmammalsandbirdsaswellashumans,whiletypesBandCinfectmainlyhumans.H1N1Influenza(SwineFlu)H1N1influenzaisatypeofinfluenzaA.Itisknownasswineflubecauseitprimarilyinfec
