Definitive diagnosis of viral hemorragic fever rests on?

The definitive diagnosis of viral hemorrhagic fever (VHF) relies on laboratory testing, including serological assays to detect specific antibodies or viral antigens, and molecular techniques such as polymerase chain reaction (PCR) to identify viral RNA. Additionally, virus isolation in cell culture can confirm the presence of the virus. Clinical evaluation and travel history are essential components of the diagnostic process, but laboratory confirmation is crucial for accurate diagnosis and management.