tick-borne disease presented by karl neidhardt. tick species and life stages most likely to bite...
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TICK-BORNE DISEASE
Presented By Karl Neidhardt
Tick Species and Life Stages Most Likely to Bite Humans in the Eastern U.S. and the Diseases They May Cause
Anaplasma phagocytophilum
ZOONOTIC CYCLE
COMMON TICK VECTORS
Borrelia burgdorferi
Agent of Lyme Disease
Ixodes scapularis Blacklegged Tick
What are the symptoms of Lyme Disease?
An EM rash is the most definitive sign.
Early stages produce flu like symptoms.
Later symptoms include problems with the muscles and joints, brain and nervous system, heart and circulation, digestion, reproductive system and skin.
ERYTHEMA MIGRANS
ERYTHEMA MIGRANS Secondary Rash
LYMEARTHRITIS
Neurological Manifestations
Bell’s Palsy
Domestic Animals
Dog with Lyme Arthritis
Cat with B. burgdorferi in eye
HorsesWild animals are asymptomatic
Check Pets For Ticks And UseRepellent(available from Vet.)
BABESIOSISBabesia microti
Vector: Ixodes scapularis
EHRLICHIOSIS
HGE - Human Granulocytic Ehrlichiosis
HGA - Human Granulocytic Anaplasmosis
HME - Human Monocytic Ehrlichiosis
Ehrlichia Life Cycle
AmblyommaamericanumLone Star Tick
LONE STAR TICK PROGRESSIVE ENGORGEMENT
Vector: American Dog Tick
RMSF - Rocky Mountain Spotted Fever Agent: Rickettsia rickettsii
RMSF RASH
Foot
Hand
Dermacentor variabilis American Dog Tick
1990-2000
TULAREMIA
American Dog Tick
Lone Star Tick
Ulcer
SPECIES COMPARISON
TICK RANGES
Lone Star Tick American Dog Tick
Blacklegged Tick
Peromyscus leucopis White footed Mouse Range (green), Hanta Cases (red)
Peromyscus maniculatus Deer Mouse
TICK HABITAT
SURVEILLANCE
Flagging
Study SiteStudy Site 0.5 kilometers
Three CO2 Traps per Sampling Site
Three CO2 Traps per Sampling Site
Sites in blue indicate Amblyomma americanum nymphs and/or adults positive for Ehrlichia chaffeensis shown over 90% population contours for nymphs and adults.
1999 20012001
33
n =1295, tested = 1295 n = 187, tested = 187
20002000
66
22
20002000
n = 1068, tested = 1068
Ft AP Hill Jamboree Area
Threat Map
Probability of Encountering
Lone Star Ticks
Red = Higher
Yellow = Lower
Green = Unlikely
PERSONAL PROTECTION
Wear light colored clothing.
Blouse pants inside socks.
PERSONAL PROTECTION
Buddy Checks
Prompt Tick Removal
Repellents
DoD Repellent System
Stop complaining Billy, It’s either this, the suit or hose.
CONTROL
Brush Removal
Targeted Backpack Spraying
Prescription Burns
ALTERNATIVE CONTROL STRATEGIES
DEER FEEDING STATIONFeeding corn treated with Doramectin for Systemic Tick Control
4-POSTER Deer Treatment Bait StationMarket Rep: American Lyme Disease Foundatione-mail: [email protected]
Supplier: CR Danials Inc. Ellicott City, MDContact: Andy Szulinski, 1-800-933-2638, ext 2481e-mail: [email protected]
Pesticide: Y-TEX, 4-Poster Tickicide, 10.0% permethrin
QUESTIONS
?
Karl Neidhardt, USCHPPM-North, ESD4411 Llewellyn, Ft Meade, MD 20755-5225E-mail: [email protected]