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1、JournalofMedicalVirology13:179-192(1984)TheBehaviourofRecentIsolatesofHumanRespiratoryCoronavirusInVitroandinVolunteers:EvidenceofHeterogeneityAmong229E-RelatedStrainsSylviaE.ReedMedicalResearchCouncil,CommonColdUnit,HarvardHospital,Salisbury,Wilts,UnitedKingdomStrainsofhumancor
2、onavirus(HCV)isolatedbetween1974and1976havebeenstudiedinvitroandinvolunteers.Allstrainscausedcoldsinvolunteers,andthosecultivableintissueculture(TC)producedsignificantlymorecoryzaandlesssorethroatthanstrainsgrowingonlyinorganculture(OC).TheTCstrainswereserologicallyrelatedto229E
3、,buttheseisolatesproducedcoldswithafrequencyandseveritythatcontrastedwiththeeffectsof229Eitself.Testsonvolunteers’preinfectionserashowedthattheprevalenceofantibodyto229Ehadincreasedduringtheperiod1961-1979andthatduring1977-1979only11%ofsubjectshadnoneutralisingantibodyagainst229
4、E.Susceptibilitytothe229E-relatedisolatesPRandTOwasassociatedwithlowpreinfectionserumneutralisingantibodyagainstthehomologousvirus,andpairedserafrequentlyshowedfourfoldorgreaterantibodyrises,mostcommonlyagainstthehomologousstrain.VolunteersinfectedwithTOwereimmunewhenreinoculate
5、dwiththesamestrainapproxi-mately1yearlater,butothersimilarvolunteerswereatleastpartlysusceptibletoinfectionwithaheterologous229E-relatedvirusaftersimilartimeintervals.AlthoughthestrainsofHCVthatweregrownintissueculturewereallrelatedtotheprototype229E,theyappearednottobeidentical
6、withit,andthisheteroge-neityisprobablyasignificantfactorintheepidemiologyofHCVinfections.Keywords:humancoronavirus,2293,neutralisingantibody,commoncolds,volunteersINTRODUCTI0NViruseshavingmorphologicalfeaturesthatarenowconsideredcharacteristicofcoronavirusesweredescribedinassoci
7、ationwithhumanrespiratorydiseasebyAl-AcceptedforpublicationJune22,1983.SylviaE.ReedisnowattheDivisionofMicrobiologicalReagentsandQualityControl,CentralPublicHealthLaboratory,ColindaleAvenue.LondonNW95HT,UnitedKingdom.01984AlanR.Liss,Inc.180ReedmeidaandTyrrell[19671andMcIntosheta
8、1[19671.Mostworkonhumanrespiratorycoronaviruses