Here's how to prevent typhoid

A medical staff member fills a syringe with TCV before administering it to a student during an immunisation campaign at a school in Karachi, Pakistan. — Reuters

Typhoid fever is caused by the bacterium Salmonella typhi, which only lives in humans.

It is usually spread through contaminated food or water, which, upon consumption, would lead to the bacteria multiplying and spreading into the human bloodstream.