關于h7n9的英語作文大學英語作文FourmorepeopleinEastChinahavebeenconfirmedtobeinfectedwiththeH7N9birdfluvirus,asanationwidescreeningprogramhasbeenlaunchedfortherarebutlethalstrain.

ThehealthauthorityinJiangsuprovincesaidfourpeoplelivingindifferentcitiesareincriticalconditionaftertheydevelopedfever,coughingandothersymptomsaroundMarch20.TheytestedpositiveforH7N9onTuesdayafternoon.

TwomenfromShanghai,aged27and87,wereconfirmeddeadonSundayfromH7N9infection,withawomanfromAnhuiprovinceincriticalcondition.

Hundredsofpeoplewhohavehadclosecontactwiththepatientshavenot,asyet,developedfeverorrespiratorysymptoms.

FengZijian,directorofemergencyresponseattheChineseCenterforDiseasePreventionandControl,saidthecountryhaslaunchedanationwideprogramtoscreenforH7N9amongpatientswithpneumonia,wherethecauseisunknown.

Theprogram,supportedbysurveillancesystemsatpublichealthinstitutionsincludinghospitals,isaimedattimelydetectionofnewcases.

Todeterminethesourceofthevirus,theidentities,backgroundandlivingconditionsofexistingpatientswillbeinvestigated,Fengsaid.“It’sunclearifthevirusoriginatedinpigsorotheranimals,”headded.

Sixteentop-levelhospitalsinJiangsuhavebeendesignatedastreatmentsitesforpatientsconfirmedtohavethevirus,andalllevelsofhospitalsarerequiredtostrengthenthescreeningofpneumoniapatientsagainstH7N9.

Othercities,includingShanghaiandBeijing,haveputforwardplanstodealwithemergenciesorlarge-scaleoutbreakscausedbytherelativelyunknownstrainofbirdflu.

ShanghaiauthoritiesonTuesdaylaunchedayellowwarningthird-levelemergencyinresponsetothenewstrain.

Expertssaythemanufactureofavaccinewilltakesometime,asresearcherswillneedathoroughunderstandingofthevirus.

Officialssaidpoultryandporkforsaleatlocalmarketsaresafe,butpeopleareurgednottoeatwildpoultry.

OnTuesday,Shanghaiauthoritiesreiteratedthatnobirdfluvirushadbeenfoundindeadpigsamplesfromariverprovidingdrinkingwatertoresidents.

InBeijingandGuangdongprovince,publichealthauthoritiessaidtheyarekeepingacloseeyeontheH7N9virus.

ItisthefirsttimetheH7N9birdfluvirushasbeenfoundinhumans,althoughthreeotherstrainsintheH7family—H7N2,H7N3andH7N7—havepreviouslybeenfoundinhumans,buttherewerenocasualties.

中國東部省份江蘇省已確診消失四例H7N9禽流感病例，針對此罕見致命病毒，中國已在全國范圍內開展監測行動。

江蘇省衛生局通報稱，這四名病患分別生活在不同城市，大約在3月20日前后消失發熱、咳嗽等病癥，目前病情危重。在周二下午他們被確診感染H7N9禽流感。

兩名上海男性上周日死于H7N9禽流感，年齡分別為27歲、87歲，一名安徽女性狀況危險，目前全國共確診7例H7N9病例。

與江蘇省四名病例親密接觸過的上百人尚未發覺有發熱或呼吸道病癥。

中國疾控中心衛生應急中心主任馮子健表示，由于感染緣由尚不行知，相關機構已在全國范圍內開展肺炎患者跟蹤打算，監控H7N9禽流感病毒。

這一打算得到了包括醫院在內的公共衛生組織監測系統的支持，目的在于準時發覺新病例。

馮子健表示，為了確定病毒根源，將調查現有病例的身份背景和生活環境。他還補充說道，“病毒來源于豬還是其他動物尚不行知。”

江蘇省指定16家三級甲級醫院作為該省H7N9禽流感確診病例定點收治醫院，同時，組織各級醫院加強對肺炎病例的監測。

其他城市包括上海、北京等，均制定應急方案來應對這一未知禽流感的大范圍爆發。

上海市政府周二啟動流感流行三級應急預案，拉響禽流感黃色預警。

專家稱由于研發人員需要對病毒有全面了解，疫苗研制將花費肯定時間。

官方稱地方市場上流通的家禽和豬肉是安全的，但建