RT Journal Article SR Electronic T1 Yellow fever vaccine-associated neurological disease, a suspicious case JF BMJ Case Reports FD BMJ Publishing Group Ltd SP bcr2016218706 DO 10.1136/bcr-2016-218706 VO 2017 A1 Pedro Beirão A1 Patrícia Pereira A1 Andreia Nunes A1 Pedro Antunes YR 2017 UL http://casereports.bmj.com/content/2017/bcr-2016-218706.abstract AB A 70-year-old man with known cardiovascular risk factors, presented with acute onset expression aphasia, agraphia, dyscalculia, right-left disorientation and finger agnosia, without fever or meningeal signs. Stroke was thought to be the cause, but cerebrovascular disease investigation was negative. Interviewing the family revealed he had undergone yellow fever vaccination 18 days before. Lumbar puncture revealed mild protein elevation. Cultural examinations, Coxiella burnetti, and neurotropic virus serologies were negative. Regarding the yellow fever virus, IgG was identified in serum and cerebrospinal fluid (CSF), with negative IgM and virus PCR in CSF. EEG showed an encephalopathic pattern. The patient improved gradually and a week after discharge was his usual self. Only criteria for suspect neurotropic disease were met, but it's possible the time spent between symptom onset and lumbar puncture prevented a definite diagnosis of yellow fever vaccine-associated neurological disease. This gap would have been smaller if the vaccination history had been collected earlier.