Your healthcare news library

Posts tagged ‘H5N2’

台再爆禽流感 雲林殺逾萬雞

(綜合報道)(星島日報報道)台灣行政院農業委員會防檢局昨日證實,雲林縣一土雞場日前報告疑似禽流感徵狀,前日證實為H5N2高病原禽流感,當晚 由當地的陸軍第十軍團派出防化兵到當地處置,除滅殺當地一萬一千多隻雞外,同時也對現場作環境消毒。農委會防檢局稱,當局在本月八日收到雲林縣家畜疾病防 治所報告,指有獸醫懷疑一個雞場發生禽流感。當局經過試驗,證實雲林北港一土雞場死亡的三千五百隻是死於H5N2。

台灣的媒體稱,為避免雲林地區H5N2禽流感疫情持續擴散,陸軍第十軍團昨日派遣三十六名防化兵,前往當地養雞場處置,除滅殺了一萬一千六百多隻雞外,同時為周邊環境實施消毒。防化兵昨日還繼續在疫區進行消毒任務。

防檢局副局長黃國青表示,此土雞場已經全場消毒完成,目前周圍至今為止家禽健康良好,未發現其他疑似案例。

新浪網

H5N2禽流感還不會危害人體 但須建立長期監控機制

H5N2禽流感還不會危害人體 但必須建立長期監控機制(李河錫報導)

 

正當禽流感逐漸平息之際,衛生署卻公佈彰化出現三起民眾感染「H5N2禽流感」產生抗體個案;縣府衛生局長葉彥伯彙整表示,這是今年初疫情盛行期,所採取「人體血清檢體」監測的結果,共採取七十二個檢體,經換算感染率約只有4%,以流行病學盛行率來研判,H5N2不論低還是高病原性病毒,即使在盛行高峰,對人體感染率依然相當低。
葉彥伯局長進一步指出,衛生署所宣告人體產生禽流感抗體案例,都是在芳苑鄉、同一處蛋雞場遭感染,一位是養雞場業者、兩名則是協助撲殺雞隻人員,經事後追 蹤都沒有出現明顯感冒病徵,證實「H5N2病毒」,至今還沒進入「人畜共通」疾病階段,比起一般感冒或流行性感冒,對民眾並沒有任何危害性!
H5N2對人體並沒有危害性,但是衛生署公佈三起人體產生抗體案例後,還是難免引起部份消費者憂心;彰化養雞業者則強調,多年前已有學者研究報告質疑,H5N2禽流感病毒已有本土化趨勢,並有部份養雞戶感染後不發病,人體產生抗體應該是常態現象,但衛生署卻又大肆宣告,唯恐讓原本就低迷的產業再度受到波及。
彰化縣養雞協會理事長陳國村,更埋怨衛生署,沒有知會產業界就勁行公佈這項訊息,將讓好不容易回穩雞蛋與土雞價格再度遭到衝擊,會造成產業界二度傷害。
基層動物防疫人員則質疑,多年前衛生署為何沒進行「人體血清抗體」流行病學調查,早已有學者研究發現人體會產生H5N2抗體卻不加以彙整採信,如今才以「首例」公佈,是否凸顯當年有防疫失職之嫌!還是如今才倉促公佈意圖卸責,則有待檢視。
葉彥伯局長強調,根據WHO世界衛生組織監測,有部份流行感冒病毒經人傳畜、畜傳人、在經由人傳人後危害性將相當大,因此將會同動物防疫所,從常態性抽檢家禽畜血清中的病毒與移行抗體,以及飼養戶等高危險族群人體血清進行雙管齊下監測,經交叉比對後,希望能強化建立疫情預警機制,以防萬一出現疫情、導致失控。
雖然「H5N2禽流感」已出現感染人體、產生抗體個案,不過葉彥伯局長則是樂觀表示,以多年來國內外疫情盛行趨勢研判,會演變成像「H5N1病毒」嚴重危害人體的機率並不高,只需持續嚴密監控,民眾還不需太過緊張!
(攝影:李河錫)

中國廣播公司

高病原禽流感肇因 待釐清

【中央社╱台北5日電】

H5N2高病原禽流感隱匿懲處2日晚間低調發布,但是否因2003年有人偷製疫苗供業者施打所致?農委會調查顯示,含歐亞型,也含美洲型病毒株,沒查明偷製案,恐難釐清。

農委會最新檢驗顯示,近年爆發的多起H5N2高病原禽流感疫情,已完成病毒株的比對,每一案的病毒株與最初2003年發生H5N2禽流感的病毒株同質性高達94%到95%,證實近幾年被延宕或隱匿的H5N2高病原疫情,確實是來自2003年最初發生疫情的加劇。

農委會發現,台灣的H5N2病毒株有8段,其中6段是歐亞型,2段是美洲型,後者是否來自墨西哥疫苗被違法偷製傳出,除非調查偷製疫苗案,才能釐清。

「不能戳的秘密」紀錄片導演李惠仁指出,台灣H5N2禽流感疫情不論是低或高病原的發生,恐怕不是外來,而是來自坊間有專業人士,未經政府許可,擅自製作當年爆發H5N2禽流感疫情的墨西哥H5N2禽流感疫苗,製程可能出問題,沒用死的病毒,讓活病毒流出所致。

他表示,明明全台不能打禽流感疫苗,卻曾有人告知他有業者偷偷打疫苗,但被傳聞是偷製者也否認。

農委會主委陳保基今天表示,「國內家禽業者是否有施打疫苗的這一部分,我們再進一步的釐清,因為很多低病原轉到高病原的過程,家禽本身也會產生低病原抗體,因此到底是用自然的(候鳥)感染來的?或者是違法疫苗所致?要進一步來釐清。」

台大獸醫專業學院名譽教授賴秀穗接受電訪指出,就他所知,檢調單位當年似曾進行過調查,但沒有具體證據。

原文出处: 聯合新聞網

宜蘭鴨 新北雞 驗出H5N2

太魯閣國家公園管理處針對候鳥進行檢體採樣,禽流感部份均呈陰性反應。(記者游太郎攝)
傳出問題的養鴨場已完成消毒工作,目前尚未恢復養鴨。 (記者詹士弘攝)
新北市三重福德市場雞隻被驗出有H5N2禽流感陽性反應,新北市農業局昨天立即派員到市場消毒。(記者郭顏慧攝)
宜蘭縣員山鄉屠宰場寄留區內,另一批來自雲林縣的土番鴨,受到移動管制,全都暫停宰殺。(記者江志雄攝)

〔記 者洪素卿、郭顏慧、劉婉君、江志雄、鄭旭凱、詹士弘、吳為恭/綜合報導〕

H5N2禽流感病毒已經遍地開花?農委會防檢局公布,本月六日新北市於福德家禽市 場抽樣的雞隻檢體中,驗出禽流感H5N2病毒核酸;不過,由於檢體並未分離出病毒、且病毒核酸分析僅三個鹼基,此案朝向低病原判定。

新北 有核酸 找不到病毒

據了解,該處並非合法家禽屠宰場,每日雞隻交易量約三萬到四萬隻,雞隻可能來自台南等南部縣市養雞場,已將相關資料交給防檢局追查。

台南市動保處則表示,當地區公所曾於二月底、三月初兩度至該雞場訪視,並未發現異狀,且此次驗出的市場雞隻來源複雜,加上新北市動保處採樣未依標準作業進行,雞隻來源無法釐清。

防檢局副局長黃國青指出,新北市案例是地方政府於該臨時攤販集中抽樣五隻雞,當中之一檢出有H5N2病毒核酸。核酸分析顯示有三個鹼基、朝向低病原判定;並未分離到病毒,未進一步做IVPI(靜脈內接種致病性指數)判定。

台大黃立民教授則指出,驗得出核酸、卻找不到病毒,有可能是檢驗過程遭到污染,也有可能是因為病毒量很少等因素,但分離不出病毒並不等於沒有病毒。

宜蘭 3百隻流入傳統市場

另外,宜蘭縣動植物防疫所在本月十三日採檢送驗的檢體當中,也檢測出H5N2病毒核酸,目前尚未分離出病毒,也還沒有確認其病毒病原性高低。不過,已經先針對該鴨場約一千隻鴨進行移動管制。

根 據追查,宜蘭縣這批測出H5N2病毒核酸的土番鴨,是由彰化縣賣到宜蘭縣,送屠宰場待宰前,暫置繫留場,中央畜產會駐場獸醫師檢驗後,未發現病症,宜蘭縣 動植物防疫所十三日派員抽取檢體,送交農委會家畜衛生試驗所化驗,但抽檢異常的三百隻鴨隔天便宰殺,多數銷往傳統市場。

彰化縣動防所長郭丑哲說,在宜蘭檢驗發現H5N2抗體的鴨隻是向彰化縣大城鄉劉姓鴨農購買,劉姓鴨農又向二林鎮兼賣飼料的劉姓女鴨農「調貨」,共賣出二千一百六十隻土番鴨。

劉姓女鴨農則說,出貨到宜蘭縣的土番鴨來自雲林縣斗南鎮某養鴨場,該養鴨業者表示,去年底他受委託代養五千隻鴨,鴨子達九十九.五%的育成率,不可能染上禽流感。雲林縣家畜疾病防治所表示,已對該養鴨場全面消毒,附近還有三十多場養鴨場,已全面採樣化驗。

原文出处: 自由時報

禽流感蔓延 世衛:H5N2對人體影響低

台湾爆發H5N2禽流感,機能蛋供不應求。(圖/中央社)

 

台灣爆發H5N2禽流感疫情。世界衛生組織表示,至今沒有發現H5N2亞型病毒感染人體,而且這種病毒構成如同H5N1對人體影響的可能性低。

台灣彰化與台南爆發H5N2高病原性禽流感疫情,世界衛生組織(WHO)「全球預警暨因應組」(GAR)發言人哈特爾(Gregory Hartl)告訴中央社記者,H5N2是1種禽流感病毒,雖然流感病毒難以預料,且確實有時候不同物種會遭受感染,但WHO至今仍未發現有任何人體感染 H5N2的病例。

哈特爾說,或許人體可能曾感染H5N2病毒未被發現,或者未來也有可能發生人體感染H5N2的病例,但WHO認為,這種病毒構成如H5N1對人體影響的可能性低。

行政院衛生署也已說明,台灣爆發養雞場雞隻感染H5N2高病原性禽流感,屬於禽鳥類間的流行性感冒,過去在全球各洲都曾傳出禽鳥感染H5N2,但至今仍沒有充分證據顯示會傳染給人類。

衛生署副署長林奏延表示,國際上至今有590名感染H5N1禽流感,其中349人已死,主要原因是接觸或食用有H5N1病毒的禽鳥,包括雞隻,主要發生地以東南亞居多。

林奏延說,目前已針對彰化、台南養雞場等相關人員進行兩次血清抗體檢測,在彰化共採檢9人,已證實未感染;在台南約有38人,其中有29人已採檢完畢,另有9人將持續進行採檢,每次血清檢測間隔2週左右。

他表示,禽流感病毒H5N2亞型與H5N1亞型不同,H5N2流感病毒感染在禽鳥中常見,而所謂高病原性禽流感病毒,是針對禽鳥類,並非針對人類。

此外,透過目前國際的疫情及全球性報告分析,沒有充足的證據顯示H5N2會發生禽傳人,因此,民眾不用恐慌,只要將肉品及蛋類完全煮熟,便可食用。(中央社布魯塞爾電)

原文網址: 今日新聞網

 

 

 

 

 

 

 

Farm inspected for H5N2 virus

GOING VIRAL:As chicken farms around the nation take greater precautions, Greater Taichung has started to vaccinate poultry farmers against the deadly H5N1 flu virus

By Mo Yan-chih  /  Staff Reporter, with CNA

Another chicken farm in Changhua County is believed to have been hit by avian flu after more than 120 hens were reported dead, an animal disease control official said yesterday.

Inspectors collected tissue samples from the hens that died on Monday to determine if they fell victim to the H5N2 avian influenza strain, which was detected at another chicken farm in the county in December last year and led to the culling of more than 50,000 chickens.

Currently, three chicken farms in the county have been affected by bird flu, County Animal Disease Control Center director Kuo Chou-che (郭丑哲) said.

As a result, strict regulations have been put in place prohibiting the movement of all birds and eggs from those farms. Quarantine experts are now working to determine what caused the outbreak.

While chicken farms around Taiwan are taking precautions to prevent an outbreak of the H5N2 avian flu, the Greater Taichung Government Health Bureau has started to vaccinate poultry farmers against the deadly H5N1 flu virus.

A series of anti-avian flu quarantine measures have been introduced in Taipei to keep the H5N2 virus at bay. Although there are no large chicken farms in Taipei City, the city government is conducting a city-wide inspection on birds registered at wholesale poultry markets, livestock farms and pet shops, Taipei Deputy Mayor Chen Wei-jen (陳威仁) said.

Taipei’s Market Management Bureau Director Ding Juo-ting (丁若亭) said the municipal livestock market handles between 60,000 and 80,000 chickens every day, with more than 5,800 registered birds from chicken or livestock farms.

The city government would increase the number of blood -samples taken from birds from 300 to 600 a month, and the more rigorous inspections should enhance food safety, Ding said.

Chen said there was insufficient evidence to prove the H5N2 strain can cross between humans and animals, so the public should not be overly concerned, though people should keep a safe distance from birds and not eat raw meat or eggs.

Read More: Taipei Times

Changhua sterilizes farm infected with H5N2 avian flu

 

Taipei, March 4 (CNA) Animal health and quarantine officials sterilized a chicken farm in central Taiwan on Sunday after an outbreak of the H5N2 strain of avian influenza occurred there in December.

The Changhua Animal Disease Control Center disinfected the egg farm, where over 54,000 birds have been culled over the past three days, to prevent the highly virulent bird flu from spreading.

The farm was the only one in the county to have had a confirmed outbreak, officials from the center said, adding that test results for another Changhua farm were still pending.

Despite the highly pathogenic H5N2 virus being detected, the death rate of hens at the farm was around 0.035 percent daily for three consecutive days, lower than 0.05 percent at other chicken farms, the center’s staff stated.

Some 16 million egg-laying chickens are raised in Changhua, and the incident has not had much impact on the industry, the center noted.

For an outbreak of the highly pathogenic bird flu to be confirmed, a farm’s daily death rates of animals should be higher than the normal range between 0.05 and 0.075 percent for three consecutive days, according to the Bureau of Animal and Plant Health Inspection and Quarantine under the Council of Agriculture.

The bureau reiterated on Sunday that the subtype H5N2 is a disease among animals and cannot be transmitted to humans. It urged the public to not be worried about the outbreak if they purchase certified poultry or meat with a Certified Agricultural Standards label.

In response to accusations that the bureau had covered up the highly contagious outbreak, the bureau said the Changhua administration began an investigation as soon as the abnormal number of of bird deaths was reported on Dec. 27, 2011.

From Dec. 31, when it imposed restrictions on transportation of the infected birds, to the day it completed its cull, the birds did not show any apparent symptoms of infection and death rates were below normal levels.

December’s Changhua outbreak was different from other documented highly pathogenic avian influenza outbreaks, the bureau added.

Two meetings have so far been held to discuss the case, in which the virus appeared to be a low pathnogenic in certain tests but highly pathogenic after DNA tests, the bureau noted.

Hsu Tien-lai, director of the bureau, resigned after the confirmed outbreak in Changhua and one in the southern city of Tainan, which resulted in the culling of 57,500 birds on Saturday.

(By Wu Jhe-hao, Lin Hui-chun and Kendra Lin)

Read More: Focus Taiwan

Tag Cloud