Hemorrhagic stroke following viper bites and delayed antivenom administration: three case reports from the Western Brazilian Amazon

Abstract Snakebites were included by the World Health Organization in their list of neglected diseases. In Latin America, most snakebites are caused by species of the Viperidae family, notably by the genus Bothrops. Bothrops atrox accounts for 90% of the cases of envenoming in the Brazilian Amazon. In this report, we present a series of three cases of snakebites that evolved with hemorrhagic stroke due to delays in the access to antivenom in the Brazilian Amazon, being fundamental for diagnosis to validate the clinical suspicion and make decisions that would improve the treatment and prognosis of the patients.

Genotypes of clinical varicella-zoster virus isolates from Manaus, Brazil

Abstract INTRODUCTION: Vaccination against varicella-zoster virus (VZV) has been effective and safe in countries that routinely administer the vaccine. Brazil began universal VZV vaccination in 2013. This study aimed to identify VZV genotypes present in Manaus, Brazil prior to widespread immunization. METHODS: Vesicular lesions or cerebral-spinal-fluid samples were collected from patients diagnosed with VZV, herpes zoster, or meningitis/encephalitis. DNA was extracted, amplified, and sequenced. RESULTS: Half the isolates were clade-5 viruses and the remaining were divided between the European clades 1 and 3. CONCLUSIONS: This study provides insights into the circulating VZV genotypes in Manaus prior to widespread vaccination.

Diabetes insipidus secondary to tuberculous meningoencephalitis with hypothalamic involvement extending to the hypophysis: a case report

Abstract The involvement of Mycobacterium tuberculosis in the central nervous system (CNS) is an uncommon and devastating manifestation of tuberculosis. We report a case of disseminated tuberculosis presenting as meningoencephalitis, hypothalamic involvement with extension to the hypophysis, and secondary insipidus diabetes diagnosed at autopsy.

Cerebelite aguda por Cryptococcus em paciente imunocompetente. Relato de caso / Acute cerebellitis caused by Cryptococcus in an immunocompetent patient. Case report

A cerebelite aguda é uma condição neurológica que pode ocorrer principalmente em associação à infecção viral, bem como a outros agentes infecciosos. A criptococose cerebral é a infecção que ocorre mais comumente em pacientes imunossuprimidos, principalmente na forma de meningoencefalite. O objetivo deste estudo foi relatar um caso de cerebelite fúngica em paciente imunocompetente, condição não relatada na literatura até omomento. Paciente do gênero masculino, 30 anos, foi encaminhado para investigação de quadro agudo de náuseas, vômitos, cefaleia intensa, vertigem e ataxia da marcha. A ressonância nuclear magnética de encéfalo demonstrou imagem hipodensaisolada em cerebelo. A análise liquórica evidenciou Criptococcus em fase de gemulação. Houve melhora completa do quadro após tratamento com anfotericina B e fluconazol. A infecção fúngica por Criptococcus é condição incomum em pacientes imunocompetentes. Casos previamente relatados de criptococose não seapresentaram de forma isolada em cerebelo. De acordo com o presente estudo, quando o quadro clínico do paciente for compatível com cerebelite, é importante atentar para outras possibilidades etiológicas, que não apenas vírus ou bactérias...

Acute cerebellitis is a neurological condition that can occur especially in association with viral infection, as well as other infectious agents. Cerebral criptococcose infection most commonly occurs in immunosuppressed patients, mainly in the form of meningoencephalitis. The objective of this study was to report a case of fungal cerebellitis in an immunocompetentpatient, a condition not reported in the literature. Male patient, 30 years old, was referred for investigation of acutenausea, vomiting, severe headache, vertigo and gait ataxia. The magnetic resonance of the brain showed an isolated hypodense image in cerebellum. The analysis of the cerebral spinal fluidrevealed cryptococcus in the process of budding. There was complete improvement after treatment with anphotericin B and fluconazole. The fungal infection cryptococcus is an uncommon condition in immunocompetent patients. Previously reported cases of criptococcose were not presented in isolation in thecerebellum. According to this study, when the patient’s condition is compatible with cerebellitis, it is important to pay attention to other etiological possibilities, not just viruses or bacteria...