Per CDC
Typhoid and paratyphoid fever are life-threatening diseases caused by Salmonella Typhi and Salmonella Paratyphi bacteria. These bacteria can be spread by eating or drinking contaminated food or water. Typhoid and paratyphoid fever affect an estimated 11–21 million people worldwide each year. These diseases are rare in the United States, but they are common in many countries.
KEY POINTS
Typhoid fever and paratyphoid fever are life-threatening illnesses.
Each of the illnesses is caused by a kind of Salmonella bacteria (germs).
Most people in the United States with these illnesses were infected during international travel.
You can find out if you need a typhoid fever vaccine at www.cdc.gov/travel.
To learn more visit: About Typhoid Fever and Paratyphoid Fever | Typhoid Fever | CDC
Link to Typhoid & Paratyphoid Fever PDF: Typhoid and Paratyphoid Fever (cdc.gov)