Original article
English
Samuel AR, Knowles NJ, Mackay DK.
Institute for Animal Health, Pirbright Laboratory, Surrey, United Kingdom.
Epidemiol Infect. 1999 Jun;122(3):529-38.
Abstract
The nucleotide sequences of the 3′ end of the capsid-coding region were determined for 30 serotype O foot-and-mouth disease (FMD) viruses isolated between 1987 and 1994 from outbreaks in North Africa and the Middle East. These sequences were compared with the previously published sequences of 9 field virus isolates from the Middle East and 5 vaccine virus strains, 3 of which originated from the Middle East (O1/Turkey/Manisa/69, O1/Sharquia/Egypt/72 and O1/Israel/2/85) and 2 from Europe (O1/Lausanne/Switzerland/65 and O2/Brescia/Italy/47). Cluster analysis of these sequences using the unweighted pair group mean average (UPGMA) method showed: (i) that the FMD viruses isolated from North Africa and the Middle East were very different from the classical European vaccine strains; (ii) that all the viruses isolated during the 1989-92 North African epidemic formed a cluster differing by no more than 6% from each other; (iii) a virus isolated in Libya in 1988 was unrelated to the aforementioned epidemic; and (iv) viruses from a second, less extensive epidemic, occurring in 1994, fell into yet another cluster.
Keywords: serotype O Aphthovirus,foot-and-mouth disease
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