Volume 13, Number 11—November 2007
Distribution of Eosinophilic Meningitis Cases Attributable to Angiostrongylus cantonensis, Hawaii
|Cause or category||No. (%)|
|Cases attributed to causes other than A. cantonensis infection*||59 (71)|
|Presence of intracranial hardware||35 (42)|
|No intracranial hardware||24 (29)|
|Patient <2 mo of age|
|No microbial etiologic agent identified||10|
|Patient ≥2 mo of age|
|Presumptive viral encephalomyelitis||1|
|Encephalitis not otherwise specified||1|
|Suspected vertebral artery dissection||1|
|Not otherwise specified¶
|Cases attributed to A. cantonensis infection||24 (29)|
*The 59 cases include 35 (42%) in patients with intracranial hardware and 24 (29%) in patients without intracranial hardware. All cases of EM in patients with intracranial hardware when the lumbar puncture was done were attributed to the hardware (Table 1), regardless of the reason for implantation. Two of the 35 such cases were in patients <2 mo of age.
†Etiologic agents were Escherichia coli, Klebsiella sp., and α-hemolytic Streptococcus.
‡Etiologic agents were S. agalactiae (group B Streptococcus) and S. pneumoniae, in 87-y-old and 5-mo-old patients, respectively.
§Etiologic agents were herpes simplex virus and an enterovirus, in 20-y-old and 3-mo-old patients, respectively.
¶Did not meet criteria for A. cantonensis infection (Table 1).