The World Health Organization uses the ratio of 10 carriers per identified victim based on U.S. records and estimates the figure to be somewhere around 26,000.
雖然世界衛生組織（WHO）曾就美國紀錄下的一比十方式（每一病患者估計十位帶原者），估算亞洲帶原者約在兩萬六千人之譜。