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. 2005 Feb;11(2):306-9.
doi: 10.3201/eid1102.040817.

West Nile virus in Morocco, 2003

Isabelle Schuffenecker  1 , Christophe N Peyrefitte, Mohammed el Harrak, Séverine Murri, Agnès Leblond, Hervé G Zeller
Affiliations

West Nile virus in Morocco, 2003

Isabelle Schuffenecker et al. Emerg Infect Dis. 2005 Feb.

Abstract

West Nile virus (WNV) reemerged in Morocco in September 2003, causing an equine outbreak. A WNV strain isolated from a brain biopsy was completely sequenced. On the basis of phylogenetic analyses, Moroccan WNV strains isolated during the 1996 and 2003 outbreaks were closely related to other strains responsible for equine outbreaks in the western Mediterranean basin.

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Figures

Figure 1
Figure 1
Map showing Kenitra Province, where equine clinical cases occurred in 2003. (adapted from the Internet site http://www.morocco.com/travel/maps03.html)
Figure 2
Figure 2
Phylogenetic trees of West Nile Virus (WNV) nucleotide sequences. Phylograms were constructed with the MEGA program, by using the Jukes Cantor algorithm and the neighbor-joining method. The percentage of successful bootstrap replicates is indicated at nodes. The length of branches is proportional to the number of nucleotide changes (% of divergence). The strains sequenced in this study are indicated by asterisks (*). A) Complete nucleotide sequence GenBank accession no. are Italy 1998 (AF404757), France 2000 (AY268132), Kenya 1998 (AY262283), Romania 1996 (AF260969), Volgograd 1999 (VLG4) (AF317203), Volgograd 1999 (27889) (AY277252), Volgograd 2000 (AY278442), Tunisia 1997 (AY268133), Israel 1998 (AF481864), NY 1999 H (AF202541), NY 1999 EQ (AF260967), Egypt 1951 (AF260968), Kunjin 1960 (D00246), Uganda 1937 (M12294). B) Envelope nucleotide sequence Genbank accession no. are Italy 1998 (AF404757), France 2000 (AY268132), Israël 2000 H (AF394217), Kenya 1998 (AY262283), Romania 1996 (AF260969), Volgograd 1999 (VLG4) (AF317203), Volgograd 1999 (27889) (AY277252), Volgograd 2000 (AY278442), Tunisia 1997 (AY268133), Israel 1998 (AF481864), NY 1999 EQ (AF260967), Mexico 2003 (AY426741), Israël 2000 Eq1 (AF380669), Israel 2000 Eq2 (AY052406), Israel 2000 Eq3 (AY052407), NY 1999 H (AF202541), Egypt 1951 (AF260968), Kunjin 1960 (D00246), Uganda 1937 (M12294). EQ: equine; H: human; MQ: mosquito.
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