Typhoid fever is a bacterial infection caused by Salmonella typhi. It spreads through contaminated food and water, often in areas with poor sanitation. Symptoms include high fever, weakness, stomach pain, headache, and loss of appetite. If untreated, it can lead to serious complications. Vaccines are available to help prevent typhoid fever, especially for travelers to high-risk regions. Treatment typically involves antibiotics, but resistance to some medications is increasing. Maintaining good hygiene and ensuring safe drinking water are essential in reducing the risk of infection.