Herpes Simplex Virus 2 Meningitis in Adults: A Prospective, Nationwide, Population-Based Cohort Study
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BACKGROUND: Data on the clinical presentation are scarce and prognostic factors of herpes simplex virus type 2 (HSV-2) meningitis remain unknown. METHODS: Prospective, nationwide, population-based database identifying all adults treated for HSV-2 meningitis at departments of infectious diseases in Denmark from 2015 to 2020. Unfavorable outcome was defined as Glasgow Outcome Scale (GOS) scores of 1-4 and Extended GOS scores of 1-6. Modified Poisson regression was used to compute relative risks with 95% confidence intervals for unfavorable outcome. RESULTS: HSV-2 meningitis was diagnosed in 205 patients (76% female; median age [interquartile range (IQR)], 35 [27-49] years) yielding an incidence of 0.7/100 000 population/y. Common symptoms were headache (195 of 204 patients [95%]), photophobia or phonophobia (143 of 188 [76%]), and neck stiffness (106 of 196 [54%]). The median (IQR) time to lumbar puncture was 2.0 (1-4.8) hours, and the median cerebrospinal fluid (CSF) leukocyte count was 360 (166-670) × 10 × 6/L, with a mononuclear predominance of 97% (91%-99%). Lumbar puncture was preceded by brain imaging in 61 of 205 patients (30%). Acyclovir or valacyclovir was administered in 197 of 205 patients (96%) for a median (IQR) of 10 (7-14) days. Unfavorable outcome was observed in 64 of 205 patients (31%) at discharge and 19 of 181 (11%) after 6 months and was not associated with female sex (relative risk [95% confidence interval], 1.08 [.65-1.79]), age ≥35 years (1.28 [.83-1.97]), immunocompromise (1.07 [.57-2.03]), or CSF leukocyte count >1000 × 10 × 6/L (0.78 [.33-1.84]). CONCLUSIONS: HSV-2 meningitis often presented as meningeal symptoms in younger women. Unfavorable outcome at discharge was common and was not associated with sex, age, immunocompromise, or CSF leukocyte count. Sequelae persisted beyond 6 months in one-tenth of patients.
Originalsprog | Engelsk |
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Tidsskrift | Clinical infectious diseases : an official publication of the Infectious Diseases Society of America |
Vol/bind | 75 |
Udgave nummer | 5 |
Sider (fra-til) | 753-760 |
ISSN | 1058-4838 |
DOI | |
Status | Udgivet - 2022 |
Bibliografisk note
Publisher Copyright:
© The Author(s) 2022. Published by Oxford University Press for the Infectious Diseases Society of America. All rights reserved. For permissions, e-mail: journals.permissions@oup.com.
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