tailieunhanh - Báo cáo khoa học: " Superinfection occurs in Anaplasma phagocytophilum infected sheep irrespective of infection phase and protection status"

Tuyển tập các báo cáo nghiên cứu về bệnh học thý y được đăng trên tạp chí Acta Veterinaria Scandinavica cung cấp cho các bạn kiến thức về bệnh thú y đề tài: Superinfection occurs in Anaplasma phagocytophilum infected sheep irrespective of infection phase and protection status. | Acta Veterinaria Scandinavica BioMed Central Research Superinfection occurs in Anaplasma phagocytophilum infected sheep irrespective of infection phase and protection status Snorre Stuen 1 Wenche O Torsteinbo1 Karin Bergstrom2 and Kjetil Bârdsen1 Address Norwegian School of Veterinary Science Department of Production Animal Clinical Sciences Sandnes Norway and 2National Veterinary Institute Department of Bacteriology Uppsala Sweden Email Snorre Stuen - Wenche O Torsteinbo - Karin Bergstrom - Kjetil Bârdsen - Corresponding author Open Access Published 26 October 2009 Received 16 August 2009 . r . Accepted 26 October 2009 Acta Veterinaria Scandinavica 2009 51 4I doi l75l-0l47-5l-4l This article is available from http content 5l lMl 2009 Stuen et al licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License http licenses by which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Abstract Background Anaplasma phagocytophilum infection in domestic ruminants is widespread in the coastal areas of southern Norway. The bacteria may persist in mammalian hosts. Several genetic variants of A. phagocytophilum exist. In the present study we investigate whether superinfection occurs in the acute and persistent phase of the infection. Methods Five-month-old lambs of the Norwegian Dala breed were experimentally infected with two l6S rRNA gene variants of A. phagocytophilum . A. phagocytophilum variant l GenBank accession number M73220 and variant 2 GenBank acc. no. AF336220 . Eighteen lambs were used two lambs in each group. Eight groups were experimentally inoculated with either variant l or 2 on day 0. Six of these groups were then challenged with the other variant on either days 7 42 or 84 .

TÀI LIỆU LIÊN QUAN
TỪ KHÓA LIÊN QUAN
crossorigin="anonymous">
Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.