The fifth pandemic, from 1881 to '96, mainly a matter of Asia and Europe.

第五次是81到96年主要影响亚欧
The sixth pandemic of 1899 to '23,

第六次是1899年到1923年
again primarily an Asian and European event.

同样主要影响亚欧两大陆
And then the seventh pandemic, from 1960 onward,

第七次是从1960年以后
that went through Asia, South America and Africa.

侵扰了亚洲南美洲和非洲
The last pandemic, however, has been milder and less virulent,

这也是最后一次大流行然而更加温和
with a new biotype, the El Tor,

它出现了新的变种也就是厄尔托霍乱
which is less dramatic and less fatal than classic cholera,

这是一种影响较小不易致命的霍乱
which is our subject, and which was the form of cholera

从第一次到第六次爆发中
from the first pandemic through the sixth.

霍乱的形式是我们的主题
The endemic home of cholera,

霍乱的起源地是
as I've said, was the Indian subcontinent,

我之前说过的印度次大陆