In the absence of knowledge of the true cause of Cholera, some of the suggested advice for avoiding it now seem a little odd. If you click the thumbnails for a larger image you'll notice again how the recommendations sometimes get close to the truth and sometimes miss by a mile.
Avoid raw vegetables.
Abstain from...ardent spirits and if habit have rendered them indispensible, take much less than usual.
Avoid getting wet!
The causes predisposing to CHOLERA are -
want of cleanliness of person,
intemperance in the use of spirits,
debauchery or excess of any kind,
sitting in wet clothes