Yellow Fever symptoms typically appear 3 to 6 days after being bitten by an infected mosquito. The initial symptoms are similar to other mosquito-borne illnesses, including fever, chills, headache, muscle aches, nausea, and vomiting. However, as the disease progresses, Yellow Fever may lead to more severe symptoms like jaundice (yellowing of the skin and eyes), bleeding, and organ failure. Early on, it can be difficult to tell Yellow Fever apart from malaria or dengue because they all share common symptoms like fever and body aches. The distinguishing factor comes when jaundice develops, which is a hallmark of severe Yellow Fever and not seen in malaria or dengue. Diagnosis typically requires laboratory tests to confirm the presence of the virus.