Arrowsmith A E
J Hyg (Lond). 1975 Dec;75(3):387-97. doi: 10.1017/s0022172400024451.
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.
1964年至1972年间,东地中海地区的A型口蹄疫病毒变种已被证明属于一个与以A5韦斯特瓦尔德为代表的西欧毒株不同的群体。这个群体似乎源自1964年首次发现的A22毒株,这表明在该领域新毒株有可能取代旧毒株。