Typhoid is a bacterial infection caused by the bacterium 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. Vaccination is available to help prevent typhoid, especially for travelers to regions where the disease is common. Treatment typically involves antibiotics, but resistance to these medications is increasing. Maintaining good hygiene and sanitation practices is crucial in reducing the risk of infection.