"Clinical presentation "
"Aetiology "
"Treatment and prognosis "
"T2: the degree of signal hyperintensity within the substantia nigra may be varied in terms of symmetry and laterality 5"
"SLEV received its name following the 1933 St. Louis, Missouri epidemic, having affected nearly 40% of the population 2. 8 genotypes have since been identified, three of which are widely distributed and prevalent across mostly eastern and central states within the United States (genotypes I and II) and South America (genotype V). In 2019, 14 cases of neuroinvasive SLEV were reported in the United States 3."
"SLEV is maintained in a mosquito-bird-mosquito transmission network across a diverse range of bird species, aquatic ecosystems and locations. Mosquitoes of the Culex genus are the vector 3."
"Only supportive treatment is available, with mortality ranging from 5-15% 3. The risk of death increases with age and is reported as 20% in the over-60s 5. There is no vaccine available."
"Murray Valley encephalitis"
"West Nile virus encephalitis"
"Japanese encephalitis"
"Powassan Virus encephalitis"
Expected headings
"Clinical presentation "
"Aetiology "
"Treatment and prognosis "
"To a lesser extent, incidence of SLEV infection in southern South America (genotype III), Columbia (genotype IV), Panama (genotypes IV and VI), Argentina (genotype VII) and the Amazon, Brazil (genotype VIII) has been reported 2."
"Symptomatic infection occurs in"
"Symptomatic infection occurs in"
"Symptomatic infection occurs in"
"Symptomatic infection occurs in"
"Symptomatic infection occurs in"
"CT imaging and MRI are often normal; the detection of anti-SLEV IgM in the serum of CSF is crucial to diagnosis. Neuroradiological data of SLE are limited. However, MRI of 2 out of 6 cases in the 1995 Dallas, Texas endemic revealed hyperintensity within the substantia nigra, thought to represent oedema 6."
"Only supportive treatment is available, with mortality ranging from 5-15% 3. The risk of death increases with age and is reported as 20% in the over-60s 5. There is no vaccine available."