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KeystoUnit13SectionIAvianinfluenza,or“birdflu”,isacontagiousdiseaseofanimalscausedbyvirusesthatnormallyinfectonlybirdsand,lesscommonly,pigs.Whileallbirdspeciesarethoughttobesusceptibletoinfection,domesticpoultryflocksareespeciallyvulnerabletoinfectionsthatcanrapidlyreachepidemicproportions.Thecurrentoutbreakofbirdfluisdifferentfromearlieronesinthatofficialshavebeenunabletocontainitsspread.RapideliminationoftheH5N1virusamonginfectedbirdsandotheranimalsisessentialtopreventingamajoroutbreak.TheWorldHealthOrganizationrecommendsthatinfectedorexposedflocksofchickensandotherbirdsbekilledinordertohelppreventfurtherspreadofthevirusandreduceopportunitiesforhumaninfection.1.禽流感是一种由病毒引起的动物接触性传染病，通常只感染禽类，在少数情况下也会感染猪。尽管所有的鸟类都会受感染，但是家禽群体特别容易受感染，而且会迅速造成大规模爆发流行。目前爆发的禽流感与早些时期的禽流感不同，因为官方还无法控制它的传播。迅速杀灭受感染的禽类和其他动物体内的H5N1病毒对预防禽流感的大规模爆发极其重要。世界卫生组织建议捕杀所有受感染和有接触史的鸡群和其他禽类，以防止病毒的进一步传播和减少人类受感染的机会。SectionIIDialogueTFTFFTTTFFPassageAsthesunclimbstoitsnoondayapex,thebeardedmantakesoffhisstrawhat,wipesthesweatfromhisbrow,andsitsbehindateamofmules,plowingthecornfield.Soonhe’llheadhometothefarmhouse,wherehiswifehasjusthungouttheweek’swash.Theywillsitdowntoasimplemeal:breadthathisdaughtershavebaked,vegetablesfromthegarden,perhapssomefreshlymadestrawberrypreserves.Gardensarefullofripeningfruitsandvegetables,readytobepickedandpreservedforthewinter.Themagicalworkshopisachild’swonderland:aminiaturewoodentableandchairset,doll-sizedcradlesandslightlybiggeronesfrotheirowners,andmini-farmhouses,completewithwoodenanimals.FTTTFTTTEx.2YouwillseeacheerfulAmishgirlbehindthecounterscoophugehelpingsoftherichest,creamiesticecreamintowafercones.Thereligiousbeliefsforwhichtheylefttheirhomelandstilldefinetheirlives,fromtheirnametotheirlanguage–aGermandialect,andtheirold-fashionedways.Theyconsiderthemodern21st-centuryconveniencestobevulgartemptations,andtheyeschewanypermanentphysicalconnectionto“theoutsideworld”–gaslines,electricwires,telephones,computersandtelevisions.Af
