A84.1

Clinical Causes: Transmission primarily occurs through the bite of infected ticks, particularly the species Ixodes ricinus. The virus can also be transmitted via unpasteurized dairy products from infected animals, although this is less common. Infection is more likely during the warmer months when ticks are active. Individuals engaging in outdoor activities such as hiking or forestry work in endemic areas are at higher risk.

Key Symptoms: Initial symptoms often include fever, fatigue, headache, muscle aches, and nausea. As the disease progresses, neurological symptoms may develop, such as confusion, dizziness, and coordination problems. In more severe cases, patients may experience meningitis, encephalitis, or myelitis, leading to neurological deficits. Some individuals may develop long-term complications, including cognitive disturbances, motor deficits, or persistent headaches. Incubation period is typically 7 to 14 days after a tick bite.

Diagnosis Path: Diagnosis of Central European tick-borne encephalitis involves a combination of clinical assessment and laboratory testing. Physicians often rely on patient history, especially recent outdoor activities in endemic areas, and look for neurological signs. Blood tests and cerebrospinal fluid analysis are performed to detect specific antibodies against the TBE virus. In some cases, PCR testing may be employed to identify viral RNA. Imaging studies like MRI can help assess brain involvement if neurological symptoms are present.

Treatment Protocols: There is no specific antiviral treatment for TBE; management is primarily supportive. Patients are provided with symptomatic relief, including pain management, hydration, and monitoring for neurological complications. Hospitalization may be necessary for severe cases. Preventive measures such as vaccination exist and are highly recommended for individuals at increased risk. Early medical attention following a tick bite can help in managing the disease effectively and reducing the risk of complications.