What roles do season and temperature have in the identification of meningitis etiology?

Updated: Jul 16, 2019
  • Author: Rodrigo Hasbun, MD, MPH; Chief Editor: Michael Stuart Bronze, MD  more...
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Answer

The time of year is an important variable because many infections are seasonal. With enteroviruses (which are found worldwide), infections occur during late summer and early fall in temperate climates and year-round in tropical regions. In contrast, mumps, measles, and varicella-zoster virus (VZV) are more common during winter and spring. Arthropod-borne viruses (eg, West Nile virus, St Louis encephalitis, and California encephalitis virus) are more common during the warmer months.


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