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Archivos argentinos de pediatría

Print version ISSN 0325-0075On-line version ISSN 1668-3501


CARBALLO, Carolina et al. Saint Louis encephalitis: case report. Arch. argent. pediatr. [online]. 2016, vol.114, n.4, pp.e268-e271. ISSN 0325-0075.

Saint Louis encephalitis is transmitted by Culex mosquitoes. In Argentina sporadic cases are registered. Symptomatic illness is unusual in children. We present a case of meningoencephalitis caused by an uncommon viral infection. The clinical signs and symptoms are unusual for pediatric patients and the bilateral thalamic compromise showed on magnetic resonance has not been described previously. An 8-year-old girl consulted due to fever, behavior disorders and ataxia. Clonus and neck stiffness were detected at physical exam. Cerebrospinal fluid revealed mononuclear leukocytosis; bilateral ischemic compromise was observed in thalamus by magnetic resonance. Saint Louis virus was confirmed by serology: serum and cerebrospinal fluid IgM were positive during the acute phase of the disease and serum IgG was positive four weeks later. Most of the signs and symptoms of the disease were resolved, however mild behavior disorders were observed as acute sequelae up to 45 days after hospital discharge.

Keywords : Encephalitis St Louis; St Louis encephalitis virus.

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