In the first week of typhoid infection, symptoms are often subtle and flu-like, which is why it can be easily mistaken for a common fever. Early signs usually include mild fever, headache, fatigue, loss of appetite, and general malaise. Some people may also experience stomach discomfort, mild cough, or constipation. Because these symptoms overlap with many other illnesses, it’s important to seek medical attention if you’ve been in a high-risk area or have potential exposure, especially if the fever persists or worsens.