Alaska Invasive Bacterial Disease Surveillance Report Neisseria meningitidis – 2015

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Background

AIP has conducted statewide surveillance of invasive Neisseria meningitidis since 2000.  Invasive N. meningitidis is a reportable condition to the State of Alaska Division of Public Health (DPH).  Reports of cases of disease caused by this organism are shared between AIP and DPH.

Population

The population of the State of Alaska in 2015 was 737,625; 144,274 (19%) were Alaska Native people.  Source:  AK Dept. of Labor & Workforce Development population estimates.

Case Definition

An isolate of Neisseria meningitidis from a normally sterile site that has been taken from a resident of Alaska.

Methods

Participating laboratories send isolates recovered from sterile sites to the AIP laboratory in Anchorage; materials and forms for isolate shipment and data collection are provided to each laboratory by AIP.  Demographic and clinical information on the cases are collected from a review of medical records.  Annually, AIP asks that each laboratory review their records and provide information on any cases that may have been overlooked.

Invasive Neisseria meningitidis Cases by Race – Alaska, 2015
Race Cases
n (%)		 Age Adjusted Rate* % Male Deaths
n (%)
Alaska Native 1 (25) 0.8 100% 0 (0)
Non-Native 3 (75) 0.5 0% 0 (0)
Total 4 67% 0 (0)

*Cases per 100,000 per percent distribution of Alaska 2010 population

Invasive Neisseria meningitidis, Cases & Rates by Age Group & Race – Alaska, 2015
Alaska Native Non-Native
Age (years) No. Cases Rate* No. Cases Rate*
<2 0 0 0 0
2-4 0 0 0 0
5-18 0 0 1 0.9
19-54 1 1.5 2 0.7
55-64 0 0 0 0
65+ 0 0 0 0
Total 1 0.7 3 0.5

*Cases per 100,000 population

Invasive Neisseria meningitidis, Clinical Presentations – Alaska, 2015
No. %*
Meningitis 3 75
Bacteremia 1 25

*Percent of cases

Serogroups of Invasive Neisseria meningitidis Cases by Race & Age Group – Alaska, 2015
Race Age (yrs) A B C W Y
AK Native <2 0 0 0 0 0
2-18 0 0 0 0 0
19-64 0 0 1 0 0
65+ 0 0 0 0 0
Non-Native <2 0 0 0 0 0
2-18 0 0 1 0 0
19-64 0 0 2 0 0
65+ 0 0 0 0 0

Vaccine Preventable Disease

The quadrivalent meningococcal conjugate vaccine (MenACWY) is recommended for 11-12 year olds with a booster at age 16.  One case occurred in the age group for which vaccine is recommended; the child was unvaccinated.

Page last reviewed: July 16, 2018
Content source: National Center for Emerging and Zoonotic Infectious Diseases (NCEZID), Division of Infectious Disease Readiness Innovation (DIDRI)