Typhoid fever is a bacterial infection caused by Salmonella Typhi. It affects the intestines and bloodstream, and spreads primarily through ingestion of contaminated food or water. It is most common in places with poor sanitation and limited access to clean water.

Main Causes and Sources of Typhoid

• Contaminated Drinking Water: Drinking water tainted with feces from an infected person is a major cause of typhoid.
• Contaminated Food: Uncooked or undercooked foods, especially fruits, vegetables, shellfish, or milk products washed or prepared with unclean water.
• Improper Handwashing: Not washing hands properly after using the toilet or before eating and cooking can spread the bacteria.
• Infected Food Handlers: If a person carrying Salmonella Typhi handles food without maintaining hygiene, the bacteria can spread to others.
• Street Food or Unregulated Vendors: Food sold in unhygienic conditions can be a source of typhoid.
• Flies and Insects: They can carry bacteria from human waste to food and utensils.
• Poor Sanitation Systems: Inadequate sewage disposal and lack of toilets increase contamination risks in the environment.

How Typhoid Spreads

• Fecal-oral transmission: The primary route where bacteria from the feces of an infected person contaminate food or water and enter another person’s mouth.
• Direct contact: Touching contaminated surfaces or hands and then touching the mouth or food.
• Carrier state: Some people recover from typhoid but continue to carry the bacteria in their gallbladder and can unknowingly infect others (chronic carriers, e.g., “Typhoid Mary”).

Risk Factors

• Traveling to or living in regions where typhoid is common (South Asia, Africa, Latin America)
• Poor personal hygiene
• Consuming unboiled water or raw produce
• Living in overcrowded or slum areas without access to clean water

Prevention Tips

• Drink only bottled, boiled, or filtered water
• Avoid raw fruits and vegetables unless you peel them yourself
• Wash hands thoroughly with soap and clean water
• Eat food that is fully cooked and served hot
• Get vaccinated before traveling to high-risk areas