Overview
Flavivirus encephalitis encompasses infections caused by various flaviviruses, including tick-borne encephalitis (TBE) virus, leading to neurological symptoms ranging from mild to severe. 2Diagnosis
Clinical presentation includes fever, headache, altered mental status, and focal neurological deficits.
Laboratory tests: Serological assays (IgM and IgG antibodies) and RT-PCR for viral RNA detection.
CSF analysis: Elevated white blood cell count, protein levels, and often positive serology.
Imaging: MRI may show characteristic brain lesions, though not always specific.
2Management
Supportive care: Airway management, seizure control, and intensive care support.
Antiviral therapy: No specific antiviral treatment universally recommended; ribavirin and interferon have been explored but evidence is limited.
Monitoring: Close neurological monitoring and management of complications.
2Special Populations
Pregnancy: Limited data; vaccination considerations should weigh risks and benefits carefully.
Pediatrics: Similar management principles apply; supportive care is crucial due to potential for rapid progression.
Elderly: Higher risk of severe complications; vigilant monitoring and supportive interventions are essential.
Comorbidities: Patients with underlying neurological conditions may require intensified supportive measures.
2Key Recommendations
Vaccination against tick-borne encephalitis is recommended with FSME-Immun, showing low incidence of serious adverse reactions (11.3% mild side effects post-first dose, 1.2% post-second dose). (Evidence: Moderate) 2
Post-vaccine side effects are significantly more common in individuals not previously exposed to tick bites, suggesting a baseline immune response impact. (Evidence: Moderate) 2
Consider individualized risk assessment for vaccination in special populations like pregnant women, given limited specific data. (Evidence: Expert opinion) 2References
1 Rahman S, Chiou CC, Almutairi MM, Ajmal A, Batool S, Javed B et al.. Targeting Yezo Virus Structural Proteins for Multi-Epitope Vaccine Design Using Immunoinformatics Approach. Viruses 2024. link
2 Grzeszczuk A, Sokolewicz-Bobrowska E, Prokopowicz D. Adverse reactions to tick-borne encephalitis vaccine: FSME-Immun. Infection 1998. link