This year there has already been a cholera epidemic in Peru, which has already killed more than 2,000 people; although the American medical community and public health agencies warned Americans to take special care, the "conditions" for the spread of cholera never materialized because the US water system and general public hygiene already are at a high level.
今年秘魯流行霍亂，已有兩千多人死亡，美國醫學界、公共衛生界雖提醒民眾注意，但並未嚴陣以待，就是因為美國的下水道系統及一般環境衛生均已達相當水準，沒有造成流行的條件。