scholarly journals Phylogenetic analysis of infectious salmon anaemia virus isolates from Norway, Canada and Scotland

2001 ◽  
Vol 44 ◽  
pp. 1-6 ◽  
Author(s):  
B Krossøy ◽  
F Nilsen ◽  
K Falk ◽  
C Endresen ◽  
A Nylund
Keyword(s):  
Phylogenetic Analysis ◽  
Infectious Salmon Anaemia Virus ◽  
Virus Isolates ◽  
Infectious Salmon Anaemia

scholarly journals Modelling the spread of infectious salmon anaemia among salmon farms based on seaway distances between farms and genetic relationships between infectious salmon anaemia virus isolates

2011 ◽  
Vol 8 (62) ◽  
pp. 1346-1356 ◽  
Author(s):  
M. Aldrin ◽  
T. M. Lyngstad ◽  
A. B. Kristoffersen ◽  
B. Storvik ◽  
Ø. Borgan ◽  
...  
Keyword(s):  
Genetic Relationships ◽  
Genetic Distances ◽  
Infectious Salmon Anaemia Virus ◽  
Time Data ◽  
Farmed Salmon ◽  
Source Of Infection ◽  
History Of ◽  
Isa Virus ◽  
Virus Isolates ◽  
Infectious Salmon Anaemia

Infectious salmon anaemia (ISA) is an important infectious disease in Atlantic salmon farming causing recurrent epidemic outbreaks worldwide. The focus of this paper is on tracing the spread of ISA among Norwegian salmon farms. To trace transmission pathways for the ISA virus (ISAV), we use phylogenetic relationships between virus isolates in combination with space–time data on disease occurrences. The rate of ISA infection of salmon farms is modelled stochastically, where seaway distances between farms and genetic distances between ISAV isolates from infected farms play prominent roles. The model was fitted to data covering all cohorts of farmed salmon and the history of all farms with ISA between 2003 and summer 2009. Both seaway and genetic distances were significantly associated with the rate of ISA infection. The fitted model predicts that the risk of infection from a neighbourhood infectious farm decreases with increasing seaway distance between the two farms. Furthermore, for a given infected farm with a given ISAV genotype, the source of infection is significantly more likely to be ISAV of a small genetic distance than of moderate or large genetic distances. Nearly half of the farms with ISA in the investigated period are predicted to have been infected by an infectious farm in their neighbourhood, whereas the remaining half of the infected farms had unknown sources. For many of the neighbourhood infected farms, it was possible to point out one or a few infectious farms as the most probable sources of infection. This makes it possible to map probable infection pathways.

In vivo virulence and genomic comparison of infectious Salmon Anaemia Virus isolates from Atlantic Canada

2018 ◽  
Vol 41 (9) ◽  
pp. 1373-1384 ◽  
Author(s):  
Francis LeBlanc ◽  
Steven Leadbeater ◽  
Mark Laflamme ◽  
Nellie Gagné
Keyword(s):  
Atlantic Canada ◽  
Infectious Salmon Anaemia Virus ◽  
Genomic Comparison ◽  
Virus Isolates ◽  
Infectious Salmon Anaemia

Comparative virulence of Infectious salmon anaemia virus isolates in Atlantic salmon,Salmo salarL.

2009 ◽  
Vol 32 (2) ◽  
pp. 157-171 ◽  
Author(s):  
R J Ritchie ◽  
J T McDonald ◽  
B Glebe ◽  
W Young-Lai ◽  
E Johnsen ◽  
...  
Keyword(s):  
Atlantic Salmon ◽  
Infectious Salmon Anaemia Virus ◽  
Virus Isolates ◽  
Infectious Salmon Anaemia

Phylogenetic analysis of clinical mumps virus isolates from vaccinated and non-vaccinated patients with mumps during an outbreak, Switzerland 1998-2000

2004 ◽  
Vol 73 (1) ◽  
pp. 91-96 ◽  
Author(s):  
Silvia Utz ◽  
Jean-Luc Richard ◽  
Selja Capaul ◽  
Hans C. Matter ◽  
Meri Gorgievski Hrisoho ◽  
...  
Keyword(s):  
Phylogenetic Analysis ◽  
Mumps Virus ◽  
Virus Isolates

scholarly journals Genetic Diversity and Phylogenetic Analysis of Citrus tristeza virus Isolates from Turkey

2019 ◽  
Vol 2019 ◽  
pp. 1-11 ◽  
Author(s):  
Gözde Erkiş-Güngör ◽  
Bayram Çevik
Keyword(s):  
Phylogenetic Analysis ◽  
Citrus Tristeza Virus ◽  
Molecular Characteristics ◽  
Cloning And Sequencing ◽  
Phylogenetic Groups ◽  
The 1960S ◽  
Tristeza Virus ◽  
Virus Isolates ◽  
Stem Pitting ◽  
Citrus Tristeza

The presence of Citrus tristeza virus (CTV) in Turkey has been known since the 1960s and the virus was detected in all citrus growing regions of the country. Even though serological and biological characteristics of CTV have been studied since the 1980s, molecular characteristics of CTV isolates have not been studied to date in Turkey. In this study, molecular characteristics of 15 CTV isolates collected from different citrus growing regions of Turkey were determined by amplification, cloning, and sequencing of their major coat protein (CP) genes. The sequence analysis showed that the CP genes were highly conserved among Turkish isolates. However, isolates from different regions showed more genetic variation than isolates from the same region. Turkish isolates were clustered into three phylogenetic groups showing no association with geographical origins, host, or symptoms induced in indicator plants. Phylogenetic analysis of Turkish isolates with isolates from different citrus growing regions of the world including well-characterized type isolates of previously established strain specific groups revealed that some Turkish isolates were closely related to severe quick decline or stem pitting isolates. The results demonstrated that although CTV isolates from Turkey are considered biologically mild, majority of them contain severe components potentially causing quick decline or stem pitting.

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