Thus, the one case that year in the US was enough to meet the standard for "epidemic," while if India had had 100 cases the same year, this would not be called epidemic because their had been no significant increase over the level of the previous year.
因此該年美國若出現一例天花，就算達到「流行病」的標準；而同年的印度如果出現一百個病例，因沒有明顯高過前一年標準，也還不能稱為流行。病例增加，另有隱情