Tick -borne Diseases at Navy and Marine Corps Bases Presentations/Brian P 2009 VMCA tick... · Camp...
Transcript of Tick -borne Diseases at Navy and Marine Corps Bases Presentations/Brian P 2009 VMCA tick... · Camp...
TickTick--borne Diseases at Navy borne Diseases at Navy
and Marine Corps Bases and Marine Corps Bases
LCDR Brian F. PrendergastLCDR Brian F. Prendergast
Laura N. HorneLaura N. Horne
Navy and Marine Corps Public Health Center, Portsmouth, VANavy and Marine Corps Public Health Center, Portsmouth, VA
LCDR Craig StoopsLCDR Craig Stoops
Navy Entomology Center of Excellence, Jacksonville, FLNavy Entomology Center of Excellence, Jacksonville, FL
Melissa MillerMelissa Miller
US Army Center for Health Promotion and Preventive Medicine US Army Center for Health Promotion and Preventive Medicine –– North, Fort Meade, MDNorth, Fort Meade, MD
�� Opinions expressed do not necessarily reflect the official Opinions expressed do not necessarily reflect the official position of the Department of Defense or the Military position of the Department of Defense or the Military Services.Services.
TickTick--borne Disease Surveillanceborne Disease Surveillance
Tick-borne Diseases in the U.S. Navy
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20
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Lyme Disease
Rocky Mountain Spotted
Fever
�Currently reviewing several disease databases to get a more accurate view of morbidity
•Lab data
•Ambulatory data
•Navy Disease Reporting System
�Passive disease surveillance difficult
•under reporting
•mis-diagnoses/over reporting
Data from Navy Disease Reporting Data from Navy Disease Reporting
SystemSystem�� Most cases in Groton among nonMost cases in Groton among non--active dutyactive duty
�� Most cases in Camp LeJeune among Active DutyMost cases in Camp LeJeune among Active DutyFigure 1. Lyme Disease Case Reports for AD
Personnel by Reporting UIC, 1996-June 2007
51
43%
9
8%
8
7%
5
4%
44
38%
Camp Lejeune
Groton
Quantico
Jacksonville
All Other*
Figure 2. Lyme Disease Case Reports for non-AD
beneficiaries by Reporting UIC, 1996-June 2007
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39%
20
17%
11
9%
10
8%
6
5%
5
4%
21
18%
Groton
Camp Lejeune
Bethesda
NEPMU2
Portsmouth
New port
All other*
Electronic Disease ReportingElectronic Disease Reporting
Reports of Lyme Disease in Active Duty Navy and MC
members, 2004-2008
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2004 2005 2006 2007 2008
Number of Cases
Year
First year of NDSRi
SeasonalitySeasonality
Counts of Positive Lyme Disease Labs among Active Duty
Navy and MC at selected locations, 2004-2008
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aryFeb
ruar
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ch
Apr
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ctobe
rNove
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Lejeune
Reports of Lyme Disease in Active Duty Navy and MC service
members, 2004-2008, by location
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MonthN
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Lejeune
Northern
All others
What is the disease What is the disease
agent?agent?
Borrelia burgdorferi or B. lonestari
Ixodes scapularis
Amblyomma americannumOR
Tick Collection and AnalysesTick Collection and Analyses� Camp LeJeune
•• 1841 ticks collected1841 ticks collected
•• 17 17 Ixodes Ixodes scapularisscapularis
− 5 (35%) positive for Borrelia burgdorferi (Lyme disease)
•• 8 8 DermacenterDermacenter variabilisvariabilis− Zero positive for Rickettsia rickettsii (Rocky mountain spotted
fever)
•• 1816 1816 AAmblyommamblyomma americanumamericanum− MIR 0.66 % Borrelia lonestari
− CDC has new evidence that Borrelia lonestari is NOT a human pathogen
− >40 % pos Rickettsia amblyommii
� Parris Island• 10 total collected on June 08 and Aug 08
� MCRD Beaufort• 1806 total Aug 08
Conclusion:Conclusion:
� Vector for Lyme disease at CL is relatively rare, the infection rates are high. Classic Lyme disease cannot be ruled out as a source of morbidity at CL in summer months.
� The highest morbidity at CL is in the summer months. Morbidity is lower when the Lyme disease vector is more common.