How People Get It
People usually get typhoid fever by drinking beverages or eating food that has been handled by someone who has typhoid fever or is a carrier of the illness. Those infected also can pass the disease onto others directly (for example, by touching them with unwashed hands). People also get the illness by drinking water that is contaminated by sewage that contains the S. Typhi bacteria.
For these reasons, the disease is common in areas with poor sanitation and inadequate water treatment. It is also common in tropical and subtropical areas around the world, including Africa, Asia, and Latin America