Typhoid fever is a serious 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 severe complications. Prevention of typhoid fever involves good hygiene practices, such as washing hands and drinking clean water. Vaccines are available and recommended for travelers to regions where the disease is common. Early diagnosis and treatment with antibiotics are crucial for recovery and to prevent the spread of the infection.