鸟类研究干皮中高致病性禽流感病毒和新城疫病毒感染的持续时间。

IF 1.1 4区 农林科学 Q3 VETERINARY SCIENCES Journal of Wildlife Diseases Pub Date : 2024-07-01 DOI:10.7589/JWD-D-24-00010
Erica Spackman, Christopher B Stephens, Elizabeth A Pusch
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引用次数: 0

摘要

鸟类学研究皮是去掉内脏和肌肉后经干燥保存的鸟类皮标本。由于研究皮在科学研究中具有很高的价值,研究人员之间会共享标本。人们担心研究用皮可能受到高致病性疾病的污染,如高致病性禽流感病毒(HPAIV)或新城疫病毒(NDV)。为降低风险,可能需要在转移前对研究用皮进行热处理或化学处理;但这些处理可能会损坏标本。因此,我们开展了一项研究,以评估从受感染的鸡(Gallus gallus)身上制备的研究皮中高致病性禽流感病毒(HPAIV)和新城疫病毒(NDV)的感染持续时间。从 10 只感染了每种病毒的鸡身上制备了研究皮。在制备研究皮时采集皮肤和羽毛样本,以确定起始滴度。皮肤中 HPAIV 和 NDV 组的平均起始滴度分别为 4.2 log10 和 5.1 log10 50%鸡蛋感染剂量 (EID50),羽毛浆中 HPAIV 的 EID50 为 6.7 log10,NDV 的 EID50 为 6.4 log10。在干燥 2 周和 4 周时收集样本,以量化存活病毒。2 周时,可检测到病毒的样本减少,HPAIV 的平均滴度为 1.8 log10(皮肤)和 2.1 log10(羽毛)EID50,NDV 的平均滴度为 1.7 log10(皮肤)和 3.5 log10(羽毛)EID50。4 周后,在两种组织类型中均检测不到存活的病毒。
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Duration of Highly Pathogenic Avian Influenza Virus and Newcastle Disease Virus Infectivity in Dried Ornithologic Study Skins.

Ornithologic study skins are specimens of avian skins that have been preserved by drying after removing the viscera and muscle. Because of the high value of study skins for scientific studies, specimens are shared among researchers. There is concern that study skins might be contaminated with high-consequence diseases such as highly pathogenic avian influenza virus (HPAIV) or Newcastle disease virus (NDV). To mitigate risk, thermal or chemical treatment of study skins may be required before transfer; however, such treatments might damage the specimens. Therefore, a study was conducted to evaluate the duration of infectivity of HPAIV and NDV in study skins prepared from infected chickens (Gallus gallus). Study skins were prepared from 10 chickens infected with each virus. Skin and feather pulp samples were taken at the time of study skin preparation to establish starting titers. Mean starting titers in the skin was 4.2 log10 and 5.1 log10 50% egg infectious doses (EID50) for HPAIV and NDV groups respectively, and were 6.7 log10 EID50 for HPAIV, and 6.4 log10 EID50 for NDV in feather pulp. Samples were collected at 2 and 4 wk of drying to quantify viable virus. At 2 wk, fewer samples had detectable virus and mean titers were 1.8 log10 (skin) and 2.1 log10 (feathers) EID50 for HPAIV, and 1.7 log10 (skin) and 3.5 log10 (feathers) EID50 for NDV. At 4 wk viable virus could not be detected in either tissue type.

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来源期刊
Journal of Wildlife Diseases
Journal of Wildlife Diseases 农林科学-兽医学
CiteScore
2.70
自引率
0.00%
发文量
213
审稿时长
6-16 weeks
期刊介绍: The JWD publishes reports of wildlife disease investigations, research papers, brief research notes, case and epizootic reports, review articles, and book reviews. The JWD publishes the results of original research and observations dealing with all aspects of infectious, parasitic, toxic, nutritional, physiologic, developmental and neoplastic diseases, environmental contamination, and other factors impinging on the health and survival of free-living or occasionally captive populations of wild animals, including fish, amphibians, reptiles, birds, and mammals. Papers on zoonoses involving wildlife and on chemical immobilization of wild animals are also published. Manuscripts dealing with surveys and case reports may be published in the Journal provided that they contain significant new information or have significance for better understanding health and disease in wild populations. Authors are encouraged to address the wildlife management implications of their studies, where appropriate.
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