淡水蟹可能成为传播禽流感病毒的载体。

Freshwater crabs could act as vehicles of spreading avian influenza virus.

机构信息

Key Laboratory of Livestock Infectious Diseases, Ministry of Education, Key Laboratory of Zoonosis, College of Animal Science and Veterinary Medicine, Liaoning Panjin Wetland Ecosystem National Observation and Research Station, Shenyang Agricultural University, 120 Dongling Rd, Shenyang, 110866, People's Republic of China.

出版信息

Virol J. 2021 Dec 11;18(1):246. doi: 10.1186/s12985-021-01708-8.

DOI:10.1186/s12985-021-01708-8

PMID:34895271

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8665573/

Abstract

Avian influenza virus (AIV) possessed significant risk to various animals and human health. Wild birds, especially waterfowls are considered to be the natural reservoir of AIVs. The ecology of AIV is still far from being fully understood. Freshwater crabs are nonnegligible biotic factor in AIV ecosystem. We analyzed the ability of freshwater crabs accumulate and spread AIV. We found that AIV remain infectious in water only for 36 h but persist in crabs for 48 h. Crabs could accumulate AIV in their gills and gastrointestinal tracts. The AIV titers in crabs were higher than the surrounding contaminated water. Crabs could accumulate AIV from contaminated water, carry the virus and spread to naïve crabs via surrounding water. Our study identified freshwater crab as a novel transmission vehicle in AIV ecosystem.

摘要

禽流感病毒（AIV）对各种动物和人类健康具有重大风险。野生鸟类，尤其是水禽，被认为是 AIV 的天然宿主。AIV 的生态学仍远未被充分了解。淡水蟹是 AIV 生态系统中不可忽视的生物因素。我们分析了淡水蟹积累和传播 AIV 的能力。我们发现 AIV 在水中仅保持传染性 36 小时，但在螃蟹中可保持 48 小时。螃蟹可以在其鳃和胃肠道中积累 AIV。螃蟹中的 AIV 滴度高于周围受污染的水。螃蟹可以从受污染的水中积累 AIV，携带病毒并通过周围的水传播到未感染的螃蟹。我们的研究确定淡水蟹是 AIV 生态系统中的新型传播媒介。