Variants of type A foot-and-mouth disease virus from the Eastern Mediterranean region (1964-1972) belong to a distinct A22 subgroup that differs significantly from Western European strains.
Variants of type A FMD virus from the Eastern Mediterranean region over the years 1964-72 have been shown to belong to a group distinct from the Western European strains as represented by A5 Westerwald. This group appears to derive from the A22 strain first recognized in 1964 and indicates the possibility of new strains supplanting old in the field.
Ann E. M. Arrowsmith (1975) studied Foot-and-mouth disease (FMD) type A. Type A FMD virus variants (A22 group) vs. Western European strains (A5 Westerwald) was evaluated on Antigenic relationship (R value) and cross-fixation relationship (r value). Variants of type A foot-and-mouth disease virus from the Eastern Mediterranean region (1964-1972) belong to a distinct A22 subgroup that differs significantly from Western European strains.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: