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Scientists origin of COVID

更新时间:2020-04-09 点击数:

   AnthonyFauci(front),(NIAID),a,-19a"Chinavirus."(Xinhua/LiuJie)ThoughtheoutbreakofCOVID-19wasfirstreportedinafishmarketinWuhan,HubeiprovinceinDecember,expertsnotedthattherealoriginofthevirusremainsunconfirmed,withposs’reportonMarch26,ItalianresearchersarelookingatwhetherahigherthanusualnumberofcasesofseverepneumoniaandfluinLombardy,inthelastquarterof2019,maybeasignalthatthenewcoronavirusmighthavespreadbeyondChinaearlierthanpreviouslythought.“WewanttoknowiftheviruswasalreadyhereinItalyattheendof2019,and-ifyes-whyitremainedundetectedforarelativelylongperiodsothatwecouldhaveaclearerpictureincasewehavetofaceasecondwaveoftheepidemic,”AdrianoDecarli,anepidemiologistandmedicalstatisticsprofessorattheUniversityofMilan,,therewasa“significant”increaseinthenumberofpeoplehospitalizedforpneumoniaan,Chinesescientistshavealsoproposedahypothesist’sreportinFebruary,researchersfromXishuangbannaTropicalBotanicalGarden,undertheChineseAcademyofSciencesandtheChineseInstituteforBrainResearch,sequencedthegenomicdataof93COVID-19samplesprovidedby12countriesinabidtotrackdownthesourceoftheinfection,,,aprofessorattheTulaneUniversitySchoolofMedicineandoneoftheauthorsofthestudy,notedthatthepansalsopossiblethatalesssevereversionoftheillnesswascirculatingthroughthepopulationforyears,perhapsevendecades,,China,Garrysaidthatisalsoamisconception."Ouranalyses,andotherstoo,pointtoanearlieroriginthanthat,"Garrysaid."Thereweredefinitelycasesthere,butthatwasn’ttheoriginofthevirus."Inadditiontoannouncingtherealbirthplaceofthevirusisstillunclear,scientistshavnMarch,COVID-19isnotalaboratoryconstructorapurposefullymanipulatedvirus,withtheresearchersconcluding“wedonotbelievethatanytypeoflaboratory-basedscenarioisplausible.”SuchconclusionisalsobackedbydatafromScrippsResearchInstituteonMarch17,originandnoevidenceshowsthattheviruswasmadeinalaboratoryorotherwiseengineered.”。

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